# List of the Paleozoic life of New York (state)

This list of the Paleozoic life of New York contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of New York and are between 538.8 and 252.17 million years of age.

## A

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Acanthoclema
** †Acanthoclema aspera
** †Acanthoclema asperum
* †Acanthoclymenia
** †Acanthoclymenia genundewa
** †Acanthoclymenia neapolitana
* †Acanthocrinus
** †Acanthocrinus spinosus
* Fossilized teeth (W) of the Cambrian–Early Ordovician conodont Acanthodus †Acanthodus
** †Acanthodus uncinatus
* †Acanthoparypha – tentative report
* †Acanthoscapha
* †Achatella
** †Achatella achates
* †Acheilops
** †Acheilops masonensis
* †Acidiphorus
** †Acidiphorus whittingtoni
* Illustration of fossils of the Cambrian trilobite Acidiscus †Acidiscus
* †Acimetopus
* †Acinophyllum
* †Acinopteria
* †Aclistocrinus
** †Aclistocrinus capistratus
* †Acodus
** †Acodus similaris
* †Acrogenia
* †Acrospirifer
** †Acrospirifer duodenaria
** †Acrospirifer macrothyris
* †Acrothele
* †Acrotreta
* †Actinoceras
** †Actinoceras ruedemanni
** †Actinoceras ruedemonni
** †Actinoceras vertebratum
* †Actinodesma
** †Actinodesma erectum
* †Actinophyllum
* †Actinopterella
* †Actinopteria
** †Actinopteria boydi
** †Actinopteria boydii
** †Actinopteria decussata
** †Actinopteria muricatus
** †Actinopteria recumbant
** †Actinopteria subdessucata
* †Actinostromella
** †Actinostromella vaiverensis
* †Actinoxylon
** †Actinoxylon banksii
* †Aculeatarbus – type locality for genus
** †Aculeatarbus depressus – type locality for species
* Fossil of the Silurian-Early Devonian eurypterid ("sea scorpion") Acutiramus †Acutiramus
** †Acutiramus floweri – type locality for species
** †Acutiramus macrophthalmus
* †Adelphobolbina
** †Adelphobolbina medialis – type locality for species
* †Aechmina
* †Aechminaria – tentative report
* †Aesopomum
* †Aglaeoglypta
** †Aglaeoglypta koeneni
** †Aglaeoglypta maera
* †Aglaoglypta
** †Aglaoglypta koeneni – type locality for species
** †Aglaoglypta maera
* †Agoniatites
** †Agoniatites discoideus
** †Agoniatites expansus
** †Agoniatites nodiferus
* Fossil of the Cambrian trilobite Agraulos †Agraulos
** †Agraulos saratogensis
* †Aknisophyllum – type locality for genus
** †Aknisophyllum consuitum – type locality for species
* †Alaionema
** †Alaionema crenulatum
* †Alanella
* †Allanella
** †Allanella tullia
** †Allanella tullius
* †Allenella
** †Allenella tullia
** †Allenella tullius
* †Alleynia
** †Alleynia americana
* †Allotrioceras
** †Allotrioceras bifurcatum
* †Allumettoceras
** †Allumettoceras giganteum
* †Ambocoelia
** †Ambocoelia gregaria
** †Ambocoelia praeumbonata
** †Ambocoelia umbonata
* †Ambonychia
** †Ambonychia praecursa
* †Ambonychiopsis
** †Ambonychiopsis curvata
* †Amorphognathus
** †Amorphognathus tvaerensis
* †Amphicoelia
** †Amphicoelia orbiculoides
** †Amphicoelia ordiculoides
* †Amphidoxodendron
** †Amphidoxodendron dichotomum
* †Amphigenia
** †Amphigenia curta
** †Amphigenia elongata
* †Amphilicas
** †Amphilicas cornutus
* †Amphilichas
** †Amphilichas minganensis
* †Amphiocoelia
* †Amphissella
** †Amphissella papillosa – type locality for species
* †Amphistrophia
** †Amphistrophia striata
* †Amphizona
** †Amphizona asceta
* †Amplexiphyllum
** †Amplexiphyllum hamiltoniae
* †Amplexograptus
* Fossils of the Ordovician-Permian bryozoan Amplexopora †Amplexopora
** †Amplexopora minnesotensis
** †Amplexopora winchelli
* †Amplexus
** †Amplexus hamiltoniae
* †Analox
* †Anamesocrinus
** †Anamesocrinus lutheri
** †Anamesocrinus spinobrachiatus – type locality for species
* †Anastrophia
** †Anastrophia brevirostris
** †Anastrophia interplicata
** †Anastrophia verneuili
* †Anazyga
** †Anazyga recurvirostra
* †Anchiopsis
** †Anchiopsis anchiops
* †Ancillotoechia
** †Ancillotoechia obtusiplicata
* †Ancistrorhyncha
* †Ancyrocrinus
** †Ancyrocrinus bulbosus
* †Aneurophyton
** †Aneurophyton germanicum
** †Aneurophyton hallii
** †Aneurophyton rachides
* †Aneurospora
** †Aneurospora heterodontus – or unidentified comparable form
** †Aneurospora semizonalis
* †Anisotechnophorus
** †Anisotechnophorus nuculitiformis – type locality for species
* †Annoceras
** †Annoceras costatum
** †Annoceras multicameratum
* †Anomalocystites
** †Anomalocystites coronatus
* †Anoplia
** †Anoplia nucleata
* †Anoplotheca
* †Anostylostroma
* †Anrangeroceras
** †Anrangeroceras repens
** †Anrangeroceras whitehallense
* †Antholites
* †Aorocrinus
** †Aorocrinus formosus
* †Aparchites
** †Aparchites minutissimus
* Restoration of the Middle Ordovician-Silurian nautiloid cephalopod Cameroceras feeding on an Aphetoceras, while a quartet of Cyclostomiceras swim by †Aphetoceras
** †Aphetoceras attenuatum
** †Aphetoceras farnsworthi
** †Aphetoceras ruedemanni
* †Aphyllopteris
** †Aphyllopteris delwarensis
* †Aphyllum
** †Aphyllum fascicularium
* †Apianurus
** †Apianurus narrawayi
* †Apiculiretusispora
** †Apiculiretusispora brandtii
* †Apiocystites
** †Apiocystites elegans
* †Apsidognathus
** †Apsidognathus tuberculatus
* †Arachnoxylon
** †Arachnoxylon kopfi
* †Archaeacarus – type locality for genus
** †Archaeacarus dubinini – type locality for species
* Life restoration of the Late Devonian-Carboniferous tree Archaeopteris with insets detailing its anatomy †Archaeopteris
** †Archaeopteris halliana
** †Archaeopteris hibernica
** †Archaeopteris macilenta
** †Archaeopteris obtusa
** †Archaeopteris sphenophyllifolia
* †Archaeosigillaria
** †Archaeosigillaria primaeva
** †Archaeosigillaria vanuxemi
** †Archaeosigillaria vanuxemii
* †Archegonaspis
* †Archinacella
** †Archinacella deformata
** †Archinacella magna – type locality for species
** †Archinacella parva – type locality for species
** †Archinacella proprius
** †Archinacella pulaskiensis
* †Archoceras – tentative report
* Fossil of the Silurian trilobite Arctinurus †Arctinurus
** †Arctinurus boltoni
** †Arctinurus nereus
* Argyrotheca
** †Argyrotheca cuneata
* †Arjamannia – tentative report
* †Arthracantha
** †Arthracantha ithacensis
* †Arthroacantha
** †Arthroacantha carpenteri
* †Arthroclema
* †Arthrophycus
** †Arthrophycus alleganiensis
** †Arthrophycus alleghaniensis
* †Arthrostylus
** †Arthrostylus tenius
* †Asaphocinus
* †Asaphocrinus
** †Asaphocrinus ornatus
* Fossil of the Early-Middle Ordovician trilobite Asaphus †Asaphus
** †Asaphus alpha
** †Asaphus beta
** †Asaphus gamma
* †Ascograptus
* †Asinomphalus
** †Asinomphalus antiqua
* †Asperconella
** †Asperconella gloriae – type locality for species
** †Asperconella troyensis
* †Aspidocrinus
* †Asteropteris
** †Asteropteris kopfi
* †Astraeospongium
* †Atactotoechus
** †Atactotoechus acritus
** †Atactotoechus kayi
* †Atalacrinus
** †Atalacrinus arctus
* †Atelelasma
** †Atelelasma multicosta
* †Ateleocystites
** †Ateleocystites balanoides
* †Atelestrocrinus
* †Athabaskiella
* †Athroacantha
* †Athyris
** †Athyris angelica
** †Athyris cora
** †Athyris polita
** †Athyris spiriferiodes
** †Athyris spiriferoides
* †Atlanticocoelia
** †Atlanticocoelia acutiplicata
* †Atopostroma
* †Atops
* †Atractocrinus
** †Atractocrinus kopfi
* †Atribonium
** †Atribonium halli
* †Atrypa
** †Atrypa gibbosa
** †Atrypa reticularis
** †Atrypa rugosa
* †Atrypina
** †Atrypina diparilis
** †Atrypina disparilis
** †Atrypina rugosa
* Life restoration of the Middle Devonian arachnid Attercopus †Attercopus
** †Attercopus fimbriunguis
** †Attercopus fimbriungus
* †Aulacognathus
** †Aulacognathus latus
* †Aulatornoceras
** †Aulatornoceras auris
** †Aulatornoceras eifliense
** †Aulatornoceras paucistriatum
** †Aulatornoceras rhysum
* †Aulocystis
** †Aulocystis commensalis
** †Aulocystis cooperi
** †Aulocystis dichotoma
** †Aulocystis jacksoni
* Fossil of the Late Ordovician-Permian tabulate coral Aulopora †Aulopora
** †Aulopora microbuccinata
** †Aulopora schohariae
** †Aulopora serpens
* †Auroraspora – or unidentified comparable form
** †Auroraspora macromanifestus
* Avicula – tentative report
* †Aviculopecten
** †Aviculopecten ornatus

## B

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Bactrites
* †Bactrocrinites
** †Bactrocrinites fieldi
* †Bactrotheca – report made of unidentified related form or using admittedly obsolete nomenclature
** †Bactrotheca emmonsi
* Bairdia
** †Bairdia summacuminata
* †Balbiniconcha
** †Balbiniconcha hebe
* †Baltagnostus
* †Balticopora
** †Balticopora tenuimurale
* †Baltoceras
** †Baltoceras pusillum – tentative report
* †Barinophyton
** †Barinophyton citrulliforme
* †Barrandeoceras
** †Barrandeoceras natator
* †Barrandeophyllum
** †Barrandeophyllum reimanni
** †Barrandeophyllum simplex
* †Barroisella
** †Barroisella campbelli – or unidentified comparable form
* †Barynema
** †Barynema lirata
** †Barynema multilirata
* †Basidechenella
** †Basidechenella rowi
* †Basilicus
** †Basilicus barrandi
** †Basilicus whittingtoni
* †Bassleridiscus – type locality for genus
** †Bassleridiscus mohawkensis – type locality for species
* †Bassleroceras
** †Bassleroceras beekmanense
** †Bassleroceras champlainense – type locality for species
** †Bassleroceras kirbyi
** †Bassleroceras microscopium
** †Bassleroceras perseus
** †Bassleroceras smithbasinense – type locality for species
** †Bassleroceras spissiseptum
** †Bassleroceras triangulum – type locality for species
** †Bassleroceras vassarina – type locality for species
* Illustration of fossils of the Cambrian trilobite Bathydiscus †Bathydiscus
* †Bathyrellus
** †Bathyrellus brevispinus
* †Bathyurellus
** †Bathyurellus platypus
* †Bathyuriscidella
* †Bathyuriscus
* †Bathyurus
** †Bathyurus extans
** †Bathyurus longispinus
* †Batostoma
** †Batostoma campensis
** †Batostoma chazyensis
** †Batostoma lanensis
** †Batostoma sheldonensis
* †Batostomella
** †Batostomella granulifera
* †Beachia
* †Beecherella
* Fossil of the Middle Devonian trilobite Bellacartwrightia †Bellacartwrightia
** †Bellacartwrightia calliteles
** †Bellacartwrightia phyllocaudata
* †Bellefontia
** †Bellefontia gyracantha
* †Bellerophon
** †Bellerophon helena
** †Bellerophon pelops
** †Bellerophon shelbiensis – type locality for species
* †Belodina
* †Bembexia
** †Bembexia insolita – type locality for species
* †Benthamaspis
** †Benthamaspis striata – or unidentified comparable form
* †Benthanyphyllum
* †Bergstroemognathus
** †Bergstroemognathus extensus
* †Berounella
* †Bertiella
* †Bethanyphyllum
** †Bethanyphyllum robustum
** †Bethanyphyllum robustus
* †Beyrichia
** †Beyrichia lakemontensis – or unidentified related form
** †Beyrichia veronica
* †Bicia
* †Bideirella
** †Bideirella reticulata
* †Bieberiana
** †Bieberiana gowandense – type locality for species
* †Billingsestraea
** †Billingsestraea varneuili
* †Bilobia
** †Bilobia pisum
* †Biornatispora
** †Biornatispora dentata
** †Biornatispora pseudospinosa
* †Birdsallella
** †Birdsallella catena – type locality for species
** †Birdsallella devonica
* †Blastoidocrinus
** †Blastoidocrinus carchariaedens
** †Blastoidocrinus expansa
* †Blotherophyllum
* †Blothrophyllum
** †Blothrophyllum decorticatum
** †Blothrophyllum promiseum
** †Blothrophyllum promissum
* †Bolaspidella
* †Bolbocephalus
* †Bolboparia
* Fossil of the Ordovician echinoderm Bolboporites †Bolboporites
** †Bolboporites americanus
* †Bollia
** †Bollia hindei
* †Bonnia
* †Botryllopora
** †Botryllopora socialis
* †Botryocrinus
** †Botryocrinus reimanni
* †Botsfordia
** †Botsfordia caelata
* †Boucotinskia
** †Boucotinskia sulcata
** †Boucotinskia sulcatus
* †Bowmania
** †Bowmania pennsylvanica – or unidentified comparable form
* †Brachiocrinus
** †Brachiocrinus nodosarius
* †Brachyopterus
* †Brachyprion
* †Breenops
** †Breenops boothi
* †Breviphrentis
** †Breviphrentis roemeri
** †Breviphrentis variabilis
** †Breviphrentis yandelli
* †Briantelasma – type locality for genus
** †Briantelasma americanum – type locality for species
** †Briantelasma knoxboroense – type locality for species
** †Briantelasma knoxboroensis
* †Bucanella
* †Bucania
** †Bucania bellapuncta
** †Bucania stigmosa
** †Bucania sulcatina
* †Bucanopsis
* †Buchiola
** †Buchiola retrostriata
* †Buehleroceras
** †Buehleroceras arcuatum
** †Buehleroceras infundibulum
** †Buehleroceras sinuatum
* Fossilized heads of the Silurian eurypterid ("sea scorpion") Buffalopterus †Buffalopterus
** †Buffalopterus pustulosus
* †Bufina
** †Bufina bicornuta
* †Bumastoides
** †Bumastoides aplatus
** †Bumastoides gardenensis
** †Bumastoides milleri
* †Bumastus
** †Bumastus ioxus
* †Bunaia
* †Buthograptus
** †Buthograptus laxus
* †Buthotrephis
** †Buthotrephis gracilis
** †Buthotrephis palmata
** †Buthotrephis ramosa
* †Byssonychia
** †Byssonychia praecursa
** †Byssonychia radiata
* Bythocypris
** †Bythocypris cylindrica
** †Bythocypris lucasensis
** †Bythocypris phaseoella – type locality for species
** †Bythocypris subquadrata
** †Bythocypris transptyxis – type locality for species
** †Bythocypris tubercula – type locality for species
* †Bythocyproidea
** †Bythocyproidea eriensis – or unidentified comparable form
* †Bythopora

## C

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Cabrieroceras
** †Cabrieroceras plebeiforme
* †Cairoa
** †Cairoa lamanekii
* †Calacanthopora
** †Calacanthopora senticosa
* †Calamophyton
** †Calamophyton bicephalum
* †Calamopitys
** †Calamopitys eupuncatata
* †Calceocrinus
** †Calceocrinus chrysalis
* †Calliocrinus
* †Callipleura
** †Callipleura nobilis
* †Callistocrinus
** †Callistocrinus tesselatus
* †Callixylon
** †Callixylon erianum
** †Callixylon petryi
** †Callixylon Zalesskyi – or unidentified comparable form
** †Callixylon zalesskyi
* †Callocystites
** †Callocystites jewetti
* †Calodiscus
** †Calodiscus lobatus
* †Calvibembexia
** †Calvibembexia sulcomarginata
* †Calvinella – report made of unidentified related form or using admittedly obsolete nomenclature
** †Calvinella prethoparia
* †Calymene
** †Calymene clintoni
** Fossils in enrolled posture of the Silurian trilobite Calymene niagarensis †Calymene niagarensis
* †Calymenella
** †Calymenella rostrata
* †Calyptaulax
** †Calyptaulax annulata
** †Calyptaulax callicephalus
* †Calyptosporites – or unidentified comparable form
** †Calyptosporites velatus
* †Camarotoechia
** †Camarotoechia acinus
** †Camarotoechia aequiradiata
** †Camarotoechia altiplicata
** †Camarotoechia billingsi
** †Camarotoechia constricta
** †Camarotoechia gongregata
** †Camarotoechia humilis
** †Camarotoechia litchfieldensis
** †Camarotoechia navicella
** †Camarotoechia neglecta
** †Camarotoechia obtusiplicata
** †Camarotoechia obtusplicata
** †Camarotoechia pauciplicata
** †Camarotoechia pristinus
** †Camarotoechia robusta
** †Camarotoechia saxatilis
** †Camarotoechia saxatillis
** †Camarotoechia semiplicata
** †Camarotoechia tethys
* †Camerella
** †Camerella varians
** †Camerella ventricosa
* Fossilized shell of the Middle Ordovician-Silurian nautiloid cephalopod Cameroceras †Cameroceras
** †Cameroceras trentonense
* †Campbelloceras
** †Campbelloceras rotundum
* †Caninia
** †Caninia complexa
** †Caninia tabulata
* †Cannapora
** †Cannapora junciformis
* †Cannopora
** †Cannopora junciformis
* Fossil of the Silurian eurypterid ("sea scorpion") Carcinosoma †Carcinosoma
** †Carcinosoma scorpionis
** †Carcinosoma spiniferus
* †Cardiograptus
* †Carinaropsis – type locality for genus
** †Carinaropsis carinata – type locality for species
* †Cariniferella
** †Cariniferella carinata
** †Cariniferella tioga
* †Carinoceras
** †Carinoceras vagans – type locality for species
* †Carniodus
** †Carniodus carnulus
* †Carolinites
** †Carolinites tasmanensis
* †Cartersoceras
** †Cartersoceras noveboracense – type locality for species
* †Carydium
** †Carydium bellistriata
** †Carydium clarkei – type locality for species
** †Carydium globularis
** †Carydium varicosa
** †Carydium varicosum
* †Caryocaris
* †Caryocrinites
** †Caryocrinites ornatus
* †Caseoceras
** †Caseoceras obesum – type locality for species
* Illustration of a fossil and restoration of the Early Ordovician nautiloid cephalopod Cassinoceras †Cassinoceras
** †Cassinoceras explanator
** †Cassinoceras grande
* †Cassowarioides
** †Cassowarioides whitei – type locality for species
* †Casteroceras
** †Casteroceras alternatum
* †Catatonocrinus
** †Catatonocrinus halli
* †Catazone
** †Catazone nevadana – or unidentified comparable form
* †Catazyga
** †Catazyga erratica
* †Catoraphiceras
** †Catoraphiceras cushingi
* †Caulopteris
** †Caulopteris lockwoodi
* †Caunopora
* †Centroceras
** †Centroceras marcellense
* †Centrocyrtoceras
** †Centrocyrtoceras mozolai
* †Centronella
** †Centronella gilboa
** †Centronella glansfagea
** †Centronella impressa
** †Centronella lisbonensis
* †Centrotarphyceras
** †Centrotarphyceras imperator
** †Centrotarphyceras seelyi
* †Ceramopora
** †Ceramopora imbricata
** †Ceramopora imbriccata
** †Ceramopora incrustans
** †Ceramopora incrustus
* †Ceramoporella
* †Ceratiocaris
* †Ceratocephala
** †Ceratocephala triacantheis
* †Ceratopea
** †Ceratopea canadensis – type locality for species
** †Ceratopea obtusa – type locality for species
* †Ceratopora
* †Ceraurinella
** †Ceraurinella latipyga – type locality for species
* Fossil of the Middle-Late Ordovician trilobite Ceraurus †Ceraurus
** †Ceraurus hudsoni
** †Ceraurus pleurecanthemus
** †Ceraurus pleurexanthemus
** †Ceraurus pleuxanthemus
** †Ceraurus polydorus
** †Ceraurus pompilius
* †Chaetetes
** †Chaetetes lycoperdon
* †Champlainopora
** †Champlainopora chazyensis
* †Chancelloria
* †Chapinella – tentative report
* †Charactocrinus
** †Charactocrinus pustulosus
* †Charionella
** †Charionella ovata
** †Charionella rostrata
* †Charionoides
** †Charionoides doris
* †Chasmatopora
** †Chasmatopora angulata
** †Chasmatopora angulatum
** †Chasmatopora asperatostriata
** †Chasmatopora asperostriata
* †Chazydictya
** †Chazydictya chazyensis
* †Chazyoceras
** †Chazyoceras valcourense
* †Cheiloceras
** †Cheiloceras amblylobum
* †Cheirocrinus
** †Cheirocrinus anatiformis
* Fossil of the Cambrian-Middle Devonian trilobite Cheirurus †Cheirurus
** †Cheirurus niagarensis
* †Chilobolbina
** †Chilobolbina hartfordensis
* †Chilotrypa
** †Chilotrypa ostiolata
* †Chironiptrum – tentative report
** †Chironiptrum arcuatum – type locality for species
* †Chondrites
* †Chonetes
** †Chonetes cornutus
** †Chonetes deflecta
** †Chonetes ensicosta
** †Chonetes filicostatus
** †Chonetes hemisphericus
** †Chonetes mucronatus
** †Chonetes nectus – or unidentified comparable form
** †Chonetes vicinus
* †Chonophyllum
** †Chonophyllum magnificus
* †Chonostrophia
** †Chonostrophia reversa
* †Chonostrophiella
* †Christiania
** †Christiania trentonensis
* †Chutoceras
** †Chutoceras nundaium
* †Cimitaria
** †Cimitaria corrugata
** †Cimitaria elongata
** †Cimitaria recurva
* †Cincinnaticrinus
** †Cincinnaticrinus multibrachiatus
** †Cincinnaticrinus varibrachialis
* Assemblage of fossilized shells of the Ordovician brachiopod Cincinnetina †Cincinnetina
** †Cincinnetina multisecta
* †Cladochonus
** †Cladochonus dichotoma
** †Cladochonus jacksoni
* †Cladopora
** †Cladopora cervicornis
** †Cladopora fibrosa – tentative report
** †Cladopora multipora
** †Cladopora reticulata
** †Cladopora seriata
* †Cladoxylon
** †Cladoxylon dawsoni
** †Cladoxylon hueberi
* †Clarkecrinus
* Fossils (1-8) of the Silurian eurypterid ("sea scorpion") Clarkeipterus †Clarkeipterus
** †Clarkeipterus testudineus – type locality for species
* †Clarkoceras
** †Clarkoceras rhomboidale
** †Clarkoceras ruedemanni
** †Clarkoceras trapezoidale
* †Clathrodictyon
* †Clathropora
** †Clathropora alcicornis
** †Clathropora frondosa
* †Clathrospira
** †Clathrospira euconica
** †Clathrospira subconica
* †Cleionychia
** †Cleionychia marginalis
** †Cleionychia montrealensis
** †Cleionychia undata
* †Clelandia
** †Clelandia parabola
* †Clidochirus
** †Clidochirus schucherti
* †Clidophorus
** †Clidophorus obscurus
** †Clidophorus planulatus
* Assemblage of fossils of the Cambrian graptolite Climacograptus †Climacograptus
** †Climacograptus typicalis
* †Clintonella
** †Clintonella vagabunda – or unidentified comparable form
* †Clionlithes
* †Clionolithes
* †Clitambonites
** †Clitambonites multicosta
* †Clitendoceras
** †Clitendoceras montrealense
** †Clitendoceras saylesi
* †Clorinda
** †Clorinda fornicata
* †Codaster
** †Codaster pyramidatus
* †Coeloclema
** †Coeloclema cavernosum
* †Coelonella
** †Coelonella scapha
* †Coelospira
** †Coelospira camilla
** †Coelospira dichotoma
** †Coelospira hemispherica
** †Coelospira plicatula
** †Coelospira sulcata
* †Coenites
* †Coenostelodictyon
** †Coenostelodictyon jewetti
** †Coenostelodictyon krekovi – or unidentified comparable form
* †Coenostroma
** †Coenostroma monticuliferum – or unidentified comparable form
* †Coleolus
** †Coleolus aciculatum
** †Coleolus camilla
** †Coleolus crenatocinctum
** †Coleolus tenuicinctum
** †Coleolus tenuicinctus
* †Colpodexylon
** †Colpodexylon deatsii
** †Colpodexylon trifurcatum
* †Colpomya
** †Colpomya faba
* †Columnaria
* †Compsocrinus
** †Compsocrinus relictus
* †Conchopeltis
** †Conchopeltis alternata
* †Conocardium
** †Conocardium denticulatum – type locality for species
* †Conocephalina
** †Conocephalina whitehallensis – type locality for species
* †Conocerina
** †Conocerina reducta
* †Conostichnus
* †Conotheca
** †Conotheca australiensis – type locality for species
* †Conotreta
** †Conotreta rusti – type locality for species
* †Conularia
** †Conularia longa
** †Conularia niagarensis
** †Conularia trentonensis
** †Conularia triangularis
** †Conularia triangulata
** †Conularia undulata
* †Conularid
* Life restoration of the Silurian-Early Devonian primitive land plant Cooksonia †Cooksonia
** †Cooksonia hemisphaerica – or unidentified comparable form
* †Coolinia
** †Coolinia subplana
** †Coolinia tnuis
* †Cordatomyonia
** †Cordatomyonia shupei
* †Cordylocrinus
** †Cordylocrinus plumosus
** †Cordylocrinus ramulosus
* †Cordylodus
** †Cordylodus angulatus
** †Cordylodus caseyi
** †Cordylodus proavus
* †Cornellites
** †Cornellites chemungensis
** †Cornellites emaceratum
** †Cornellites emaceratus
** †Cornellites fasciculata
** †Cornellites flabella
** †Cornellites flabellum
** †Cornellites flubella
* Fossil of the Middle Ordovician-Carboniferous horn coral Cornulites †Cornulites
** †Cornulites bellistriatus
** †Cornulites distans
** †Cornulites flexuosus
** †Cornulites niagarensis
* †Cornuproetus
** †Cornuproetus beecheri
* †Coronocrinus
** †Coronocrinus polydactylus
* †Corynexochides – tentative report
* †Corynoides
* †Corynotrypa
** †Corynotrypa dissimilis
* †Costalocrinus
** †Costalocrinus rex – type locality for species
** †Costalocrinus sentosus
* †Costellirorstra
** †Costellirorstra peculiaris – or unidentified comparable form
* †Costellirostra
* †Costellispirifer
* †Costispirifer
** †Costispirifer arenosa – or unidentified comparable form
** †Costispirifer arenosus
* †Costistricklandia
** †Costistricklandia gaspeensis
** †Costistricklandia lirata
* †Costulatostyliolina
* †Cotteroceras
* †Cranaena
** †Cranaena eudora
** †Cranaena lincklaeni
** †Cranaena linklaen
** †Cranaena linklaeni
** †Cranaena navicella
** †Cranaena romingeri
** †Cranaena subalobosa
* Crania
** †Crania crenistriata
* A living Craniella sponge Craniella
** †Craniella hamiltoniae
* †Craniops
** †Craniops hamiltoniae
** †Craniops linguiformis
** †Craniops squammiformis
* †Crassotornoceras
** †Crassotornoceras crassum – or unidentified related form
* †Crenistriella
** †Crenistriella crenistria
** †Crenistriella rotalinea
* †Crickites
** †Crickites lindneri
* †Crinobrachiatus
** †Crinobrachiatus brachiatus
* †Crinoid
** †Crinoid anchors
* †Cristodus
** †Cristodus loxoides
* †Crownopora
* †Crurispina
** †Crurispina nana
** †Crurispina spinosa
* †Cryptograptus
* †Cryptolithus
** †Cryptolithus bellulus
** †Cryptolithus lorettensis
** †Cryptolithus tesselatus
* †Cryptonella
** †Cryptonella planirostra
** †Cryptonella planirostrata
** †Cryptonella rectirostra
** †Cryptonella rectirostrata
* †Cryptophyllus
** †Cryptophyllus arsinius – type locality for species
* †Ctenacaronychus – type locality for genus
** †Ctenacaronychus nortoni – type locality for species
* †Ctenocrinus
** †Ctenocrinus nobilissimus
** †Ctenocrinus pachydactylus
** †Ctenocrinus stoloniferus
* †Ctenodonta
** †Ctenodonta bidorsata
** †Ctenodonta dubia
** †Ctenodonta dubiaformis
** †Ctenodonta elliptica
** †Ctenodonta lata
** †Ctenodonta limbata
** †Ctenodonta machaeriformis
** †Ctenodonta mactriformis
** †Ctenodonta peracuta
** †Ctenodonta salinensis
* †Ctenoloculina
** †Ctenoloculina cicatricosa
** †Ctenoloculina eurybathrota
* Fossils and life restoration of the Silurian eurypterid ("sea scorpion") Ctenopterus †Ctenopterus
** †Ctenopterus cestrotus
* †Cuneamya
** †Cuneamya alveata
** †Cuneamya cuneata
** †Cuneamya elliptica
* †Cupularostrum
** †Cupularostrum congregata
** †Cupularostrum contracta
** †Cupularostrum dotis
** †Cupularostrum exima
** †Cupularostrum eximia
** †Cupularostrum horsfordi
** †Cupularostrum orbicularis – tentative report
** †Cupularostrum prolifica
** †Cupularostrum stevensi
* †Cupulocorona
** †Cupulocorona gemmiformis
* †Cupulocrinus
** †Cupulocrinus gracilus
* †Cupulorostrum
** †Cupulorostrum congregata
** †Cupulorostrum dotis
** †Cupulorostrum horsfordi
** †Cupulorostrum prolifica
** †Cupulorostrum sappho
* †Curtoceras
** †Curtoceras eatoni
** †Curtoceras internistriatum
* †Cyathocylindrium
* †Cyathodictya – tentative report
* †Cyathophyllum
* †Cybele
** †Cybele prima
** †Cybele primus
* †Cybeloides
** †Cybeloides prima
* †Cyclonema
** †Cyclonema cancellatum
** †Cyclonema leptonotum
** †Cyclonema varicasum
** †Cyclonema varicosum
* †Cyclora
** †Cyclora subulata
* †Cyclostomiceras
** †Cyclostomiceras cassinense
* †Cylindrophyllum
* †Cymatonota
** †Cymatonota raricosta
** †Cymatonota undatum
* †Cymostrophia
** †Cymostrophia patersoni
* Fossil of the Late Ordovician-Late Devonian trilobite Cyphaspis †Cyphaspis
* †Cypricardella
** †Cypricardella bellastriata
** †Cypricardella bellistriata
** †Cypricardella complana
** †Cypricardella complanata
** †Cypricardella complanatus
** †Cypricardella crassa
** †Cypricardella gregaria
** †Cypricardella laroquei
** †Cypricardella marylandica
** †Cypricardella tenuistriata
** †Cypricardella tenuistriatus
* †Cypricardina
* †Cypricardinea
** †Cypricardinea indenta
* †Cypricardinia
** †Cypricardinia indenta
** †Cypricardinia undulostriata
* †Cypricordella
** †Cypricordella tenuistriata
* †Cyrtactinoceras
** †Cyrtactinoceras boycii
** †Cyrtactinoceras champlainense
* †Cyrtia
** †Cyrtia exporrecta
** †Cyrtia meta
** †Cyrtia pyramidalis
* †Cyrtina
** †Cyrtina dalmani – or unidentified comparable form
** †Cyrtina hamiltonensis
** †Cyrtina hamiltoniae
** †Cyrtina pyramidalis
** †Cyrtina recta
** †Cyrtina rostrata
** †Cyrtina varia – or unidentified comparable form
* †Cyrtinoides
** †Cyrtinoides eliei
* †Cyrtobaltoceras
** †Cyrtobaltoceras gracile
* Restoration of the Cambrian-Middle Devonian nautiloid cephalopod Cyrtoceras †Cyrtoceras
** †Cyrtoceras eugenium
** †Cyrtoceras kirkbyi – tentative report
** †Cyrtoceras subcancellatum
* †Cyrtodonta
** †Cyrtodonta alata
** †Cyrtodonta scala
** †Cyrtodonta solitaria
* †Cyrtodontula
** †Cyrtodontula ventricosa
* †Cyrtolites
** †Cyrtolites ornatus
** †Cyrtolites pileolus
** †Cyrtolites type locality for species – informal
* †Cyrtonella
** †Cyrtonella mitella
* †Cyrtorizoceras
** †Cyrtorizoceras rusti – type locality for species
* †Cyrtospira
** †Cyrtospira raymondi
* Fossilized shells of the Middle-Late Devonian brachiopod Cyrtospirifer †Cyrtospirifer
** †Cyrtospirifer alti
** †Cyrtospirifer altiplicatus
** †Cyrtospirifer augusticardinalis
** †Cyrtospirifer chemungensis
** †Cyrtospirifer cyrtiniformis
** †Cyrtospirifer disjunctus
** †Cyrtospirifer hornellensis
** †Cyrtospirifer inermis
** †Cyrtospirifer nucalis
** †Cyrtospirifer preshoensis
** †Cyrtospirifer sulcifer
** †Cyrtospirifer vandermarkensis
** †Cyrtospirifer whitneyi
* †Cyrtostropha – type locality for genus
** †Cyrtostropha macrospira
* †Cyrtovaginoceras
* †Cystiphylloides
** †Cystiphylloides americanum
** †Cystiphylloides confollis
** †Cystiphylloides conifolis
** †Cystiphylloides conifollis
** †Cystiphylloides sulcatum
* †Cystiphyllum
** †Cystiphyllum niagarense
* †Cystophylloides
* †Cytarocrinus
* †Cyttarocrinus
** †Cyttarocrinus eriensis

## D

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Dactylogonia
** †Dactylogonia incrassata
* Fossil of the Carboniferous-Late Cretaceous petrified conifer wood morphogenus Dadoxylon †Dadoxylon
** †Dadoxylon halli – or unidentified comparable form
* †Dakeoceras
** †Dakeoceras champlainense – type locality for species
** †Dakeoceras gracilis
** †Dakeoceras harrisi – type locality for species
* †Dalejina
** †Dalejina hybrida
** †Dalejina oblata – tentative report
* †Dalmanella
** †Dalmanella elegantula
** †Dalmanella elgantula
** †Dalmanella rogata
** †Dalmanella whittakeri
* Fossil of the Late Ordovician-Middle Devonian trilobite Dalmanites †Dalmanites
** †Dalmanites limulurus
** †Dalmanites litchfieldensis
* †Dalmanitina
* †Daonella
* †Dapsilodus
** †Dapsilodus mutatus
* †Dawsonoceras
** †Dawsonoceras americanum
** †Dawsonoceras americanus
** †Dawsonoceras annulatum
* †Decadocrinus
** †Decadocrinus multinodosus
** †Decadocrinus ornatus
* †Dechenella
** †Dechenella macrocephalus
** †Dechenella rowi
* †Decoriconus
** †Decoriconus fragilis
* Life restoration of two species of the Silurian trilobite Deiphon †Deiphon
* †Dekayia
* †Delphiceras
** †Delphiceras cataphractum
* †Deltacrinus
** †Deltacrinus clarus
** †Deltacrinus contractus
* †Delthyris
* †Deltoceras
** †Deltoceras vaningeri
* †Denayella
** †Denayella rotalia
* †Dendrocrinus
** †Dendrocrinus alternatus
** †Dendrocrinus aphelos
** †Dendrocrinus bactronodosus
** †Dendrocrinus longidactylus
** †Dendrocrinus ursae
* †Dendrocystites
** †Dendrocystites paradoxocus
* †Densastroma
** †Densastroma pexisum
* †Depasophyllum
** †Depasophyllum tabulatum – type locality for species
* †Desmograptus
* †Devonacarus – type locality for genus
** †Devonacarus sellnicki – type locality for species
* †Devonaster
* †Devonoblastus
** †Devonoblastus leda
* †Devonochonetes
** †Devonochonetes coronatus
** †Devonochonetes scitulus
* †Diabolirhynchia
** †Diabolirhynchia acinus – or unidentified comparable form
* †Diabolirhynchus
** †Diabolirhynchus acinus
* †Diacanthaspis
** †Diacanthaspis parvula
* †Diamesopora
** †Diamesopora dichotoma
* †Diamesropora
** †Diamesropora dichotoma
* †Diaphelasma
** †Diaphelasma oklahomense – or unidentified comparable form
* †Diaphorastoma
* †Diaphorodus
** †Diaphorodus delicatus
* †Dibolbina
* †Dibolisporites
** †Dibolisporites correctus – or unidentified comparable form
* †Dicellograptus
* †Dicoelosia
** †Dicoelosia biloba
* †Dicranella
** †Dicranella bivertex
* †Dicranograptus
** †Dicranograptus nicholsoni
* †Dicranopeltis
* †Dicranopltus
** †Dicranopltus nereus – or unidentified comparable form
* †Dictyobembix
** †Dictyobembix hebe – type locality for species
* †Dictyonema
** †Dictyonema gracile
** †Dictyonema gracilis
** †Dictyonema hamiltoniae
** †Dictyonema retiforme
** †Dictyonema subretiforme
* †Dictyotomaria
** †Dictyotomaria capillaria
** †Dictyotomaria itylus – type locality for species
* Fossil of the Middle Ordovician graptolite Didymograptus †Didymograptus
* †Diestoceras
** †Diestoceras sycon – type locality for species
* †Dignomia
** †Dignomia alveata
* †Dikelocephalus
** †Dikelocephalus hartti
** †Dikelocephalus tribulus – type locality for species
* †Dimerocrinites
** †Dimerocrinites arborescens
** †Dimerocrinites lilliformis
** †Dimerocrinites lockportensis
* †Dimerocrinus
** †Dimerocrinus brachiatus
** †Dimerocrinus liliiformis
* †Dimeropyge
** †Dimeropyge clintonensis
* †Dinorthis
* Fossil of the Late Ordovician-Middle Devonian trilobite Dipleura †Dipleura
** †Dipleura dekayi
* †Diploclema
** †Diploclema sparsum
* †Diplograptus
* †Diplophyllum
** †Diplophyllum subcaespitosum
* Discina
** †Discina doria
** †Discina minuta
* †Discinella
** †Discinella micans
* †Discinocaris
* †Discomyorthis
** †Discomyorthis musculosa
* †Discosorus
** †Discosorus conoideus
* †Disphyllum
** †Disphyllum caespitosum
* †Distacodus
** †Distacodus falcatus
* †Distomodus
** †Distomodus staurognathoides
* †Dizygopleura
** †Dizygopleura intermedia
** †Dizygopleura proutyi
* †Dizygopleurella
* †Dolatocrinus
** †Dolatocrinus lirata
** †Dolatocrinus liratus
** †Dolatocrinus springeri – type locality for species
* †Doleroides
* †Dolerorthis
** †Dolerorthis flabella
** †Dolerorthis flabellites – or unidentified related form
* †Dolichoharpes
* Life restoration of the Silurian eurypterid ("sea scorpion") Dolichopterus †Dolichopterus
** †Dolichopterus herkimerensis – type locality for species
** †Dolichopterus jewetti – type locality for species
** †Dolichopterus macocheirus
** †Dolichopterus siluriceps
* †Doraclatum
** †Doraclatum compandium – type locality for species
* †Douvillina
** †Douvillina cayuta
** †Douvillina inaequistriata
** †Douvillina inequistriata
** †Douvillina ineuistriata
** †Douvillina inquistriata
* †Dracochela – type locality for genus
** †Dracochela deprehendor – type locality for species
* †Drepanellina
** †Drepanellina modesta
* †Drepanoistodus
** †Drepanoistodus concavus
** †Drepanoistodus suberectus
* Fossilized foliage from the Early-Late Devonian club moss relative Drepanophycus †Drepanophycus
** †Drepanophycus colophyllus
** †Drepanophycus gaspianus
** †Drepanophycus spinaeformis
** †Drepanophycus spinosus
* †Drydenia
** †Drydenia foliata
* †Dwightoceras
** †Dwightoceras dactyloides
* †Dynamocrinus
** †Dynamocrinus robustus
* †Dyoidophragma
** †Dyoidophragma polymorphum

## E

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Eatonia
** †Eatonia medalis
** †Eatonia medialis
* †Ecchosis – type locality for genus
** †Ecchosis pulchribothrium – type locality for species
* †Ecculiomphalus
** †Ecculiomphalus fredericus
* †Eccyliopterus
** †Eccyliopterus kalmi
** †Eccyliopterus vagrans
* †Ecdyceras
** †Ecdyceras sinuiferum
* †Echinocaris
* †Echinocoelia
** †Echinocoelia ambocoelioides
** †Echinocoelia ambocoeloides
* †Echinolichas
** †Echinolichas eriopus
* †Ectenoceras
* †Ectenocrinus
** †Ectenocrinus simplex
** †Ectenocrinus triangulus
* †Ectenodesma
* †Ectenolites
** †Ectenolites clelandi
** †Ectenolites curviseptatus
** †Ectenolites extensus
** †Ectenolites sinuatus
* †Ectocycloceras
** †Ectocycloceras cataline
** †Ectocycloceras cato
* †Edaphophyllum
* †Eddya
** †Eddya sullivanensis
* †Edmondia (bivalve) – tentative report
** †Edmondia philipi
* †Edriocrinus
** †Edriocrinus occidentalis
** †Edriocrinus pociliformis
* †Elasmonema
** †Elasmonema lichas
* Fossil of the Middle-Late Devonian trilobite Eldredgeops †Eldredgeops
** †Eldredgeops rana
* †Eleutherocrinus
* †Elita
** †Elita fimbriata
** †Elita fimoriata
* †Ellesmeroceras
** †Ellesmeroceras inbricatum
** †Ellesmeroceras indomitum
* †Elliptocephala
** †Elliptocephala asaphoides
* †Elyta
** †Elyta fimbriata
* †Emanuella
** †Emanuella subumbona
* †Emmanuella
** †Emmanuella subumbona
* †Emmelezoe
* †Emmelozoe
* †Emmonsia
* †Emphanisporites – tentative report
* †Enallophrentis – tentative report
* †Encrinaster
* †Encrinurus
** †Encrinurus ornatus
* Fossilized shells and restored appearances of the Middle-Late Ordovician nautiloid cephalopod Endoceras †Endoceras
** †Endoceras annuliferum
** †Endoceras champlainense
** †Endoceras hudsoni
** †Endoceras magister
** †Endoceras proteiforme
** †Endoceras raymondi
** †Endoceras tityrus
* †Endodesma
** †Endodesma tranceps
* †Endophyllum
** †Endophyllum ciurcai – type locality for species
* †Enfieldia
** †Enfieldia mutilata
* †Ensiferites
** †Ensiferites armatus
** †Ensiferites bennetti
** †Ensiferites delicatulus
** †Ensiferites leptodactylus
** †Ensiferites wattlesi
* †Enterolasma
** †Enterolasma calculum
** †Enterolasma caliculum
** †Enterolasma strictum
* †Eoagnostus
** †Eoagnostus acrorhachis – type locality for species
* †Eoangyomphalus
** †Eoangyomphalus peneglabra – type locality for species
* †Eoarthropleura – type locality for genus
* †Eobucania
** †Eobucania subovatus – type locality for species
* †Eocoelia
** †Eocoelia hemisphaerica
** †Eocoelia hemispherica
** †Eocoelia intermedia
** †Eocoelia sulcata
* †Eodevonaria
** †Eodevonaria acutiradiata
** †Eodevonaria arcuata
** †Eodevonaria gaspensis – or unidentified comparable form
** †Eodevonaria hemispherica
* †Eodictyonella (formerly Dictyonella)
** †Eodictyonella coralifera
* †Eohalysiocrinus
** †Eohalysiocrinus caelatus
** †Eohalysiocrinus typus
* †Eoleperditia
* †Eomyelodactylus
** †Eomyelodactylus sparteus – type locality for species
** †Eomyelodactylus spartus
** †Eomyelodactylus uniformis – type locality for species
* †Eoplectodonta
** †Eoplectodonta transversalis
* †Eopolychaetus
* †Eorizoceras
** †Eorizoceras platyceroides
* †Eorudolfoceras
** †Eorudolfoceras antiquum
* †Eoschizodus
** †Eoschizodus chemungensis
* †Eoschuchertella
** †Eoschuchertella arcotostriata
* Fossilized roots of the Middle Devonian tree Wattieza †Eospermatopteris
** †Eospermatopteris erianus – tentative report
* †Eospinatrypa
** †Eospinatrypa nodostriata
* †Eospirifer
** †Eospirifer plicatula – or unidentified comparable form
** †Eospirifer radiatus
* †Eospongia
** †Eospongia varians
* †Eosyringothyris – or unidentified comparable form
** †Eosyringothyris asper
* †Eotripteroceras
** †Eotripteroceras minutum
* †Epitornoceras
** †Epitornoceras mithracoides – or unidentified comparable form
** †Epitornoceras peracutum
* †Erdiotrypa
** †Erdiotrypa striata
* †Eremoceras
** †Eremoceras expansum
** †Eremoceras multicameratum
** †Eremoceras teres
* Illustration of fossils of various organs and stages of development of the Silurian-Early Devonian eurypterid ("sea scorpion") Erettopterus †Erettopterus
** †Erettopterus globiceps
** †Erettopterus grandis
** †Erettopterus waylandsmithi – type locality for species
* †Eridophyllum
** †Eridophyllum gigas
** †Eridophyllum subcaespitosum
* †Eridotrypa
** †Eridotrypa exigua
** †Eridotrypa mutabilis
** †Eridotrypa nutabilis
** †Eridotrypa solida
** †Eridotrypa striata
* †Eridotrypella
** †Eridotrypella striata – or unidentified comparable form
* Fossils (figures 2-10) of the Silurian-Devonian eurypterid ("sea scorpion") Erieopterus †Erieopterus
** †Erieopterus microphthalmus
* †Eroicaspira
** †Eroicaspira bellicincta
* †Erratencrinurus
** †Erratencrinurus vigilans
* †Escharopora
* †Etymothyris
* †Eucalyptocrinites
** †Eucalyptocrinites caelatus
* †Eucalyptocrinus
** †Eucalyptocrinus caelatus
* †Eucheirocrinus
* †Euconia
** †Euconia sinuata – type locality for species
* †Euglyphella
** †Euglyphella asapha – type locality for species
** †Euglyphella deltella – type locality for species
** †Euglyphella numismoides
* †Eukloedenella
* †Eumetabolotoechia
** †Eumetabolotoechia multicostata
* †Eunema
* †Eunoa
* †Euomphalus
** †Euomphalus clymenoides
** †Euomphalus fairchildi – type locality for species
* †Euptychaspis
** †Euptychaspis typicalis
* †Eurychilina
** †Eurychilina canadensis
** †Eurychilina latimarginata
* Fossil of the Silurian eurypterid ("sea scorpion") Eurypterus †Eurypterus
** †Eurypterus dekayi
** †Eurypterus laculatus
** †Eurypterus pittsfordensis
** †Eurypterus remipes
* †Eurystomites
** †Eurystomites accelerans
** †Eurystomites amplectens
** †Eurystomites kelloggi
* †Euryzone
** †Euryzone arata
** †Euryzone clausa
** †Euryzone itys
* †Eusarcus
* †Euspirocrinus
** †Euspirocrinus wolcottense
* †Eutaxocrinus
** †Eutaxocrinus ithacense
** †Eutaxocrinus whiteavesi
* †Exoclitendoceras – type locality for genus
** †Exoclitendoceras rochdalense – type locality for species

## F

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* †Fahraeusodus
** †Fahraeusodus marathonensis
* †Failleana
** †Failleana limbata
* †Falsipollex
** †Falsipollex simplilobatus – type locality for species
* †Fardenia
** †Fardenia interstriata
* Fossil of the Late Ordovician-Permian tabulate coral Favosites †Favosites
** †Favosites alpenensis
** †Favosites arbuscula
** †Favosites argus
** †Favosites basalticus
** †Favosites biloculi
** †Favosites canadensis
** †Favosites constrictus
** †Favosites emmonsi
** †Favosites epidermatus
** †Favosites favosideus
** †Favosites hamiltoniae
** †Favosites helderbergensis
** †Favosites helderbergiae
** †Favosites hisingeri
** †Favosites limitaris
** †Favosites milne-edswardii
** †Favosites milneedwardsii
** †Favosites niagarensis
** †Favosites nitella – tentative report
** †Favosites parasiticus
** †Favosites placenta
** †Favosites pyriforme
** †Favosites pyriformis
** †Favosites tuberosa
** †Favosites turbinata
** †Favosites turbinatus
* †Fenestella
** †Fenestella elegans
** †Fenestella emaciata
** †Fenestella eumaciata
** †Fenestella planiramosa
** †Fenestella tenuis
* †Fenestrellina
* †Ferestromatopora – report made of unidentified related form or using admittedly obsolete nomenclature
* †Filogranites
** †Filogranites booiji
* †Fimbrispirifer
** †Fimbrispirifer divaricata
** †Fimbrispirifer divaricatus
* †Finkelnburgia
* †Fistulipora
** †Fistulipora crustula
** †Fistulipora laminata
** †Fistulipora sphericus
** †Fistulipora tuberculosa
* †Fistulopora
** †Fistulopora tuberculosa
* †Flabellitesia
** †Flabellitesia flabellites
* †Fletcheria
** †Fletcheria incerta
** †Fletcheria incognita
* †Fletcherina
** †Fletcherina incognita
* Front (left) and right side (right) views of an enrolled fossil of the Middle Ordovician-Silurian trilobite Flexicalymene †Flexicalymene
** †Flexicalymene senaria
* †Floripatella
** †Floripatella irregularis
* †Floweria
** †Floweria arctostriata
** †Floweria becraftensis
** †Floweria chemungensis
** †Floweria perversa
* †Foersteoceras
* †Foerstephyllum
** †Foerstephyllum halli
* †Foliaster
** †Foliaster transversus
* †Foordites
** †Foordites buttsi – or unidentified comparable form
* Illustrations of fossilized shells of the Cambrian marine bivalve Fordilla †Fordilla
* †Fremontoceras
** †Fremontoceras jewetti
* †Fusispira

## G

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* †Garwoodia
** †Garwoodia gregaria
* †Gasconadia
** †Gasconadia floridensis – type locality for species
** †Gasconadia mohawkensis – type locality for species
* †Gazacrinus
** †Gazacrinus immaturus
* Fossilized shell of the Middle Ordovician-Middle Devonian nautiloid cephalopod Geisonoceras †Geisonoceras
** †Geisonoceras lineolatus
** †Geisonoceras shumardi
** †Geisonoceras tenuistriatum
** †Geisonoceras tenuitextum
* †Gelasinotarbus – type locality for genus
** †Gelasinotarbus bifidus – type locality for species
** †Gelasinotarbus bonamoae – type locality for species
** †Gelasinotarbus fimbriunguis – type locality for species
** †Gelasinotarbus heptops – type locality for species
** †Gelasinotarbus reticulatus – type locality for species
* †Gennaeocrinus
** †Gennaeocrinus eucharis
* Fossilized calyx and partial stem of the Devonian-Carboniferous crinoid ("sea lily") Gilbertsocrinus †Gilbertsocrinus
** †Gilbertsocrinus alpenensis
** †Gilbertsocrinus intersculptus – type locality for species
** †Gilbertsocrinus rarispinus – type locality for species
** †Gilbertsocrinus spinigerous
** †Gilbertsocrinus spinigerus
* †Gilboaphyton
** †Gilboaphyton goldringiae
* †Gilboarachne
** †Gilboarachne griersoni – type locality for species
* †Ginkgophyton
* †Glaphurina
** †Glaphurina lamottensis
* †Glaphurus
** †Glaphurus pustulatus
** †Glaphurus pustulotus
* †Glenisteroceras
** †Glenisteroceras obscurum
* †Glossites
** †Glossites depressus
** †Glossites nuculoides
* †Glossograptus
* †Glyptocardia
** †Glyptocardia speciosa
* Assemblage of fossils of the Middle Ordovician-Silurian crinoid ("sea lily") Glyptocrinus †Glyptocrinus
* †Glyptocystites
** †Glyptocystites forbesi
* †Glyptodesma
* †Glyptograptus
* †Glyptomena
** †Glyptomena distans
** †Glyptomena prisca
* †Glyptorthis
** †Glyptorthis bellarugosa
** †Glyptorthis crispata
** †Glyptorthis sulcata
* †Glyptotomaria
** †Glyptotomaria ciliata – type locality for species
** †Glyptotomaria genundewa – type locality for species
* Fossilized shell of the Middle Devonian nautiloid cephalopod Goldringia †Goldringia
** †Goldringia trivolvis
* †Gomphoceras
* †Gomphocysstites
** †Gomphocysstites tenax – or unidentified comparable form
* †Gonatocaris
* †Gondekia
** †Gondekia lancifer
* Fossilized shell of the Late Devonian-Late Triassic ammonoid cephalopod Goniatites †Goniatites
* †Gonioceras
** †Gonioceras anceps
** †Gonioceras brainerdi
** †Gonioceras chaziense
** †Gonioceras multiseptatum
** †Gonioceras pameliense
** †Gonioceras quadratum
* †Goniograptus
* †Goniophora
** †Goniophora chemungensis
** †Goniophora hamiltonensis
** †Goniophora hamiltoniae
** †Goniophora rugosa
** †Goniophora truncata
* †Goniophoria
** †Goniophoria chemungensis
* †Goniostropha
** †Goniostropha extenuata
* †Gosseletia
** †Gosseletia triquetra
* †Gothocrinus – tentative report
** †Gothocrinus multibrachiatus
* †Graciloceras
** †Graciloceras longidomum
* †Gramatodon
** †Gramatodon chemungensis
** †Gramatodon hamiltoniae
* †Grammatodon
** †Grammatodon hamiltoniae
* †Grammysia
** †Grammysia alveata
** †Grammysia arcuata
** †Grammysia bisulcata
** †Grammysia elliptica
** †Grammysia nodocosta
** †Grammysia obsoleta
** †Grammysia praecursor
* †Grammysioidea
** †Grammysioidea alveata
** †Grammysioidea arcuata
** †Grammysioidea constricta
** †Grammysioidea elliptica – or unidentified comparable form
** †Grammysioidea globosa
** †Grammysioidea obsoleta
** †Grammysioidea subarcuata
* †Grammysoidea
** †Grammysoidea arcuata
** †Grammysoidea bisulcata
** †Grammysoidea constricta
* †Graptodictya
* †Graptospongia
* Fossil of the Middle-Late Devonian trilobite Greenops †Greenops
** †Greenops boothi
* †Grinnellaspis
** †Grinnellaspis marginiata – or unidentified comparable form
* †Groomodiscus
** †Groomodiscus calcifer – type locality for species
* †Gypidula
** †Gypidula coeymanensis
* †Gyroceras
** †Gyroceras paucinodum

## H

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* †Habrostroma
** †Habrostroma centrotum
** †Habrostroma controtum
** †Habrostroma microporum
* †Hadrophyllum
** †Hadrophyllum woodi
* †Hagnocrinus
** †Hagnocrinus corporiculus
* †Haileyia
* †Halkieria
* †Hallinetes
** †Hallinetes lineatus
** †Hallinetes setigera
* Life restoration of the Late Devonian eurypterid ("sea scorpion") Hallipterus †Hallipterus
** †Hallipterus excelsior
* †Halloceras
** †Halloceras undulatum
* †Hallograptus
* †Hallopora
** †Hallopora elegantula
* †Halysites
** †Halysites catenularia
* †Hanaites
** †Hanaites platus
* †Hapsiphyllum
** †Hapsiphyllum bifurcatum
* †Haptocrinus
* Fossil of the Silurian eurypterid ("sea scorpion") Hardieopterus †Hardieopterus
** †Hardieopterus myops
* †Haskinsia
** †Haskinsia colophylla
* †Healdia
** †Healdia arkonensis – or unidentified comparable form
* †Hebetoceras
** †Hebetoceras cylindriforme
** †Hebetoceras mirandum
* †Hedeina
** †Hedeina eudora
** †Hedeina macropleura
* †Hedellara
* †Hederella
* †Helcionella
** †Helcionella subrugosa
* †Heliolites
** †Heliolites elegans
** †Heliolites pyriformis
** †Heliolites spinipora – tentative report
* †Heliomeroides
** †Heliomeroides teres
* †Heliophylloides
** †Heliophylloides corniculum
* Fossil of the Middle Devonian horn coral Heliophyllum †Heliophyllum
** †Heliophyllum confluens
** †Heliophyllum gemmatum
** †Heliophyllum halli
* †Helopora
** †Helopora fragilis
** †Helopora ragilis
* †Hemiarges
** †Hemiarges turneri
* †Hemiaspis
* †Hemicystites
** †Hemicystites parasiticus
* Fossil of the Cambrian trilobite Hemirhodon †Hemirhodon
* †Hennigopora
* †Hepaticites
** †Hepaticites devonicus
* †Hercostrophia
** †Hercostrophia subcamerata
* †Hercynella
** †Hercynella buffaloensis – or unidentified comparable form
* †Hernodia
* †Herrmannina
** †Herrmannina alta
* †Hertzina
** †Hertzina elongata
* †Hesperorthis
** †Hesperorthis costalis
** †Hesperorthis ignicula
* †Heterocrinus
** †Heterocrinus heterodactylus
* †Heterophrentis
** †Heterophrentis complanata
** †Heterophrentis prolifica
** †Heterophrentis simplex
* †Heteroschisma
** †Heteroschisma canadensis
* †Hexameroceras
** †Hexameroceras chadwicki – tentative report
* †Hibbardia
** †Hibbardia lacrimosa
* †Hibbertia
** †Hibbertia valcourensis
* †Hindella
* †Hindia
* †Hipparionix
* †Hipparionyx
** †Hipparionyx proximus – or unidentified comparable form
* †Hoareicardia
** †Hoareicardia cunea
* †Hollinella
** †Hollinella ampulla – type locality for species
** †Hollinella epakra – type locality for species
** †Hollinella plauta
** †Hollinella retusilobata – type locality for species
** †Hollinella sella – type locality for species
** †Hollinella tricollina
* †Holocystites – tentative report
* Fossilized shells of the Ordovician-Carboniferous sea snail Holopea †Holopea
** †Holopea obsoleta
** †Holopea plauta
** †Holopea plautus
** †Holopea scrutator
* †Homalonotus
** †Homalonotus delphinocephalus
** †Homalonotus dlephinocephalus
* †Homalophyllum
** †Homalophyllum exigum
* †Homeospira
** †Homeospira apriniformis
* †Homocrinus
** †Homocrinus parvus
* †Homocystites
** †Homocystites anatiformis
* †Homoeospira
** †Homoeospira apriniformis
* †Homotrypa
** †Homotrypa similis
* †Hormotoma
** †Hormotoma bilineata – type locality for species
** †Hormotoma gracilis
** †Hormotoma micula
** †Hormotoma simplex
** †Hormotoma sulcatum
* †Hostinella
** †Hostinella silurica
* †Howellella
** †Howellella crispa
** †Howellella cycloptera – or unidentified comparable form
** †Howellella cyclopterus
** †Howellella vanuxemi
* †Hudsonoceras
** †Hudsonoceras aristos
* Fossils of the Silurian eurypterid ("sea scorpion") Hughmilleria †Hughmilleria
** †Hughmilleria shawangunk
** †Hughmilleria socialis
* †Hungerfordia
** †Hungerfordia dichotoma
* †Hyattidina
** †Hyattidina congesta
* †Hyboaspis
** †Hyboaspis depressa
* †Hyenia
** †Hyenia banksii
* †Hyolithellus
** †Hyolithellus micans
** †Hyolithellus papillatus – type locality for species
* Fossilized shells of the Cambrian-Permian brachiopod relative Hyolitha †Hyolithes
** †Hyolithes aclis
** †Hyolithes americanus
** †Hyolithes gibbosus
* †Hypagnostus
* †Hyperoblastus
** †Hyperoblastus goldringae
* †Hypodicranotus
** †Hypodicranotus striatulus
* †Hypothyridina
** †Hypothyridina venestula
** †Hypothyridina venustula
* †Hysterolites
** †Hysterolites perimele
* †Hystricurus
** †Hystricurus conicus – or unidentified comparable form
** †Hystricurus ellipticus

## I

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* †Ibyka
** †Ibyka amphikoma
* †Ichthyocrinus
** †Ichthyocrinus laevis
* †Icriodella
** †Icriodella superba
* †Icriodus
** †Icriodus alternatus
* †Icthyocrinus
** †Icthyocrinus conoideus
** †Icthyocrinus laevis
** †Icthyocrinus subangulatus
* †Idiospira – tentative report
** †Idiospira longa – type locality for species
* †Illaenoides
* †Illaenus
** †Illaenus incertus
** †Illaenus punctatus
* †Inocaulis
** †Inocaulis aborescens
* †Insolitotheca – type locality for genus
** †Insolitotheca communis
* †Intexodictyon
** †Intexodictyon manliusense – type locality for species
* Fossil of the Ordovician crinoid ("sea lily") Iocrinus †Iocrinus
** †Iocrinus subcrassus
** †Iocrinus trentonensis
* †Iridistrophia
** †Iridistrophia radiata – or unidentified comparable form
* †Iridopteris
** †Iridopteris eriensis
* †Ischadites
** †Ischadites planoconvexa
** †Ischadites planoconvexum
** †Ischadites planoconvexus
* †Ischyrodonta
** †Ischyrodonta unionoides
* †Ischyrotoma
* †Isochilina
** †Isochilina labrosa
* †Isograptus
* †Isorthis
** †Isorthis perelegans
** †Isorthis proinqua
** †Isorthis propinqua
* †Isoteloides
** †Isoteloides canalis
** †Isoteloides peri
* Fossil of the Middle-Late Ordovician giant trilobite Isotelus. †Isotelus
** †Isotelus angusticaudum
** †Isotelus bearsi
** †Isotelus canalis
** †Isotelus gigas
** †Isotelus gingas
** †Isotelus harrisi
** †Isotelus obtusum
** †Isotelus obtusus
** †Isotelus simplex
** †Isotelus walcotti
* †Ithacadictya – type locality for genus
** †Ithacadictya cornelli – type locality for species

## J

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* †Janusella
* †Jenningsina
** †Jenningsina catenulata
* †Joleaudella
** †Joleaudella catilloides
* †Jonesina
** †Jonesina apoglypha – type locality for species
* †Jordanopora
** †Jordanopora heroensis

## K

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* †Katabuporhynchus
** †Katabuporhynchus mesacostalis
* †Kawina
** †Kawina chazyensis
* †Keithiella
* †Keraiaceras – tentative report
** †Keraiaceras percostatum
* †Keriaceras – tentative report
** †Keriaceras percostatum
* †Kiaeropterus
** †Kiaeropterus otisius
* Fossilized shells of the Middle Ordovician-Permian nautiloid cephalopod Kionoceras †Kionoceras
** †Kionoceras cancellatum
** †Kionoceras erraticum – type locality for species
** †Kionoceras infrequens – type locality for species
** †Kionoceras polyplicatum – type locality for species
** †Kionoceras profundum
** †Kionoceras valcourense – type locality for species
* †Kirkbyella
** †Kirkbyella tora – type locality for species
** †Kirkbyella unicornis
** †Kirkbyella verticalis
* †Kitikamispira
** †Kitikamispira concinna – type locality for species
** †Kitikamispira hamiltoniae
* †Kloedenella
* †Kloedenia
* †Knorria
** †Knorria chemungensis
* †Knoxiella
** †Knoxiella reticulata – type locality for species
* †Kockelella
** †Kockelella ortus
** †Kockelella ranuliformis
** †Kockelella walliseri
* †Koenenia
** †Koenenia emarginata
* †Koenenites
** †Koenenites beckeri – type locality for species
** †Koenenites cooperi
** †Koenenites fasciculatus
** †Koenenites styliophilus – type locality for species
* †Kophinocrinus
** †Kophinocrinus spiniferous
** †Kophinocrinus spiniferus
* †Kozlowskiellina
** †Kozlowskiellina perlamellosa
* †Kyphosocrinus
** †Kyphosocrinus tetreaulti

## L

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* †Labechia
** †Labechia eatoni
** †Labechia prima – type locality for species
** †Labechia pustulosa – or unidentified comparable form
** †Labechia valcourensis – type locality for species
* †Lambeophyllum
** †Lambeophyllum profundum
* †Lamottoceras
** †Lamottoceras franklini
* †Lamottopora
** †Lamottopora duncanae
* †Lapworthella
** †Lapworthella schodakensis
* †Lasiocrinus
** †Lasiocrinus scoparius
* †Laurentoscandodus
** †Laurentoscandodus triangularis
** †Laurentoscandodus triangulatus
* †Lawrenceoceras
** †Lawrenceoceras breve
** †Lawrenceoceras confertissimum
* †Lecanocrinus
** †Lecanocrinus macropetalus
** †Lecanocrinus magnaradialis
** †Lecanocrinus pusillus – or unidentified comparable form
* †Lecanospira
** †Lecanospira compacta
* Fossils of the Middle Devonian clubmoss Leclercqia †Leclercqia
** †Leclercqia complexa
* †Leidosigillaria – or unidentified comparable form
* †Leioclema
** †Leioclema aspera
** †Leioclema asperum
** †Leioclema confertiporum
** †Leioclema decipiens
** †Leioclema florida
* †Leiocorphyge – tentative report
** †Leiocorphyge lobata – type locality for species
* †Leiocoryphe – tentative report
** †Leiocoryphe lobata
* †Leiopyge
* †Leiorhynchus
** †Leiorhynchus laura
** †Leiorhynchus limitare
** †Leiorhynchus limitaris
** †Leiorhynchus mesacarina
** †Leiorhynchus multicostum
** †Leiorhynchus multiscostum – tentative report
** †Leiorhynchus quadracostata
** †Leiorhynchus quadracostatus
** †Leiorhynchus quadricostatum
** †Leiorhynchus sinuata
** †Leiorhynchus sinuatum
** †Leiorhynchus ventricosum
* †Leperditia
** †Leperditia alta
** †Leperditia canadensis
** †Leperditia fabulites
** †Leperditia limatula
** †Leperditia nana
** †Leperditia scalaris
* †Lepidocoleus
** †Lepidocoleus jamesi
* Restoration of the Carboniferous-Late Triassic club moss relative Lepidodendron. Eli Heimans (1911). †Lepidodendron
** †Lepidodendron chemungense
* †Lepidosigillaria
** †Lepidosigillaria whitei
* †Lepocrinites
** †Lepocrinites gebhardi
** †Lepocrinites gebhardii
* †Leptaean
** †Leptaean rhomboidalis – report made of unidentified related form or using admittedly obsolete nomenclature
* †Leptaena
** †Leptaena moniquensis
** †Leptaena ordovicica
** †Leptaena rhomboidalis
* †Leptaenisca
* †Leptobolus
** †Leptobolus insigna
** †Leptobolus insignis
* †Leptochilodiscus
* †Leptocoelia
** †Leptocoelia flabellites
* †Leptodesma
** †Leptodesma bigsbyi
** †Leptodesma billingsi
** †Leptodesma clitus
** †Leptodesma conradi
** †Leptodesma dekayi
** †Leptodesma extenuatum
** †Leptodesma jason
** †Leptodesma laevis
** †Leptodesma lichas
** †Leptodesma mathori
** †Leptodesma mesacostalis
** †Leptodesma mortoni
** †Leptodesma naviforme
** †Leptodesma nitida
** †Leptodesma potens
** †Leptodesma propinquum
** †Leptodesma rafinesqui
** †Leptodesma rhomboidea
** †Leptodesma rhomboideum
** †Leptodesma sayi
** †Leptodesma spinerigum
** †Leptodesma spinigerum
** †Leptodesma striatula
** †Leptodesma striatus
** †Leptodesma subplana
** †Leptodesma torregi
** †Leptodesma waviformes
* †Leptograptus
** †Leptograptus annectans
* Leptospira †Leptospira
** †Leptospira gibbosa
* †Leptostrophia
** †Leptostrophia beckii
** †Leptostrophia bipartita
** †Leptostrophia planulata
* †Leptotrypella
** †Leptotrypella amplectens
** †Leptotrypella asterica
** †Leptotrypella multitecta
* †Levenea
** †Levenea subcarinata
* †Levenia
** †Levenia lenticularis
* Life restoration of the Early Ordovician nautiloid cephalopod Levisoceras †Levisoceras
* †Liacalymene
* †Lichenalia
** †Lichenalia concentrica
* †Lichenocrinus
* †Lidstroemella
** †Lidstroemella aspidum
* †Limoptera
** †Limoptera macroptera
* †Limuloides – tentative report
* †Linguatornoceras
** †Linguatornoceras linguum – or unidentified related form
* †Linguella
** †Linguella granvillensis – or unidentified comparable form
* †Lingula
** †Lingula allingi – type locality for species
** †Lingula clintoni
** †Lingula complanata
** †Lingula curta
** †Lingula densa
** †Lingula desiderata
** †Lingula lamellata
** †Lingula oblata
** †Lingula procne
** †Lingula punctata
** †Lingula riciniformis
** †Lingula semina
** †Lingula spatulata
** †Lingula vicina
* †Lingulapholis – tentative report
* Illustration of a fossilized shell of the Cambrian-Late Ordovician brachiopod Lingulella †Lingulella
** †Lingulella brainerdi
** †Lingulella columba
** †Lingulella granvillensis
** †Lingulella prima
* †Lingulepis
** †Lingulepis acuminata
* †Linnarssonia
* †Linoporella
* †Liocalymene
** †Liocalymene clintonensis
** †Liocalymene clintoni
** †Liocalymene niagarensis
* †Liomphalus
** †Liomphalus disjunctus
* †Liospira
** †Liospira americana
* †Lobobactrites
** †Lobobactrites clavus
* †Lobotornoceras
** †Lobotornoceras hassoni – or unidentified related form
* †Loculipora
** †Loculipora perforata
* †Logocrinus
** †Logocrinus geniculatus
* †Lonchocephalus
** †Lonchocephalus calciferus
* Fossil of the Ordovician trilobite Lonchodomas †Lonchodomas
** †Lonchodomas chaziensis
** †Lonchodomas halli
* †Longispina
** †Longispina mucronata
** †Longispina mucronatus
* †Longstaffia
** †Longstaffia pulchra
* †Lophospira
** †Lophospira billingsi
** †Lophospira perangulata
** †Lophospira rectistriata
** †Lophospira ventricosa
* †Loxodus
** †Loxodus bransoni
* †Loxonema
** †Loxonema bertiense – tentative report
** †Loxonema postremum
* †Loxophragma
** †Loxophragma lechrium
* †Loxoplocus
** †Loxoplocus gothlandicus – type locality for species
* †Lucasella – tentative report
** †Lucasella spinulifera
* †Lunulacardium
** †Lunulacardium curtum
** †Lunulacardium marcellense
** †Lunulacardium ornatum
* †Luprisca – type locality for genus
** †Luprisca incuba – type locality for species
* †Lyriocrinus
** †Lyriocrinus dactylus
* †Lyriopecten
** †Lyriopecten orbiculatus
* †Lyrodesma
** †Lyrodesma poststriatum

## M

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Macgeea
** †Macgeea ponderosa – type locality for species
* †Machaeraria
* †Mackinnonia
** †Mackinnonia rostratum – type locality for species
** †Mackinnonia taconica – type locality for species
* †Macluritella
** †Macluritella imperfecta – type locality for species
** †Macluritella multiseptarius – type locality for species
** †Macluritella uniangulata
* †Maclurites
** †Maclurites magnus
* †Macrochilina
** †Macrochilina pygmaea
** †Macrochilina seneca
* †Macrocoelia
** †Macrocoelia champlainensis
** †Macrocoelia ruedemanni
* †Macropleura
** †Macropleura eudora
** †Macropleura macropleura
* †Macrostylocrinus
** †Macrostylocrinus fusibrachiatus
** †Macrostylocrinus granulosus – or unidentified comparable form
** †Macrostylocrinus ornatus
* †Maeneceras
** †Maeneceras acutolaterale – or unidentified related form
* †Malocystites
** †Malocystites emmonsi
** †Malocystites murchisoni
* †Manticeras
* Fossilized shell of the Devonian ammonoid cephalopod Manticoceras †Manticoceras
** †Manticoceras contractum
** †Manticoceras lamed
** †Manticoceras nodifer
** †Manticoceras sinuosum
* †Mariacrinus – report made of unidentified related form or using admittedly obsolete nomenclature
** †Mariacrinus stoloniferus
* †Marsupiocrinus
** †Marsupiocrinus tentaculatus
* †Mastigobolbina
** †Mastigobolbina clarkei
** †Mastigobolbina decora
** †Mastigobolbina incipiens
** †Mastigobolbina lata
** †Mastigobolbina punctata
** †Mastigobolbina retifera
** †Mastigobolbina trilobata
** †Mastigobolbina trilobatus
** †Mastigobolbina trilobita
** †Mastigobolbina typus
** †Mastigobolbina vanuxemi
* †Mastigograptus
* †Matherella – type locality for genus
** †Matherella saratogensis
* Fossilized plates of the Cambrian-Early Ordovician chiton Matthevia †Matthevia
* †Mccluskiceras – type locality for genus
** †Mccluskiceras comstockense – type locality for species
* †Mclearnites
* †Mcqueenoceras
** †Mcqueenoceras jeffersonense – or unidentified related form
* †Meadowtownella
** †Meadowtownella trentonensis
* †Mediospirifer
** †Mediospirifer angustus
** †Mediospirifer audaculus
** †Mediospirifer mucronatus
* †Medusaegraptus
** †Medusaegraptus graminiformis
* †Medusagraptus
* †Megakozlowkiella
** †Megakozlowkiella sculptilis
* †Megakozlowskiella
** †Megakozlowskiella perlamellosa – or unidentified comparable form
** †Megakozlowskiella raricosta
** †Megakozlowskiella sculptilis
** †Megakozlowskiella sculptis
* †Megambonia
** †Megambonia aviculoidea
* †Meganterella
** †Meganterella finksi
* †Megastrophia
** †Megastrophia concava
** †Megastrophia hemisphaerica
** †Megastrophia hemispherica
** †Megastrophia hemisphericus
** †Megastrophia profunda
* †Megastylia
* †Megistocrinus
** †Megistocrinus depressus
* †Mellopegma – tentative report
** †Mellopegma georginensis – tentative report
* †Melocrinus
** †Melocrinus ornatus – type locality for species
* †Mendacella
* †Meniscoceras
** †Meniscoceras coronense
* †Menoeidina
** †Menoeidina multipuncata – type locality for species
** †Menoeidina versicula – type locality for species
* Illustration (lower right, entry 15) of a fossilized shell in front and side views of the Silurian-Late Devonian brachiopod Meristella †Meristella
** †Meristella arcuata
** †Meristella barissi
** †Meristella barrisi
** †Meristella doris
** †Meristella haskinsi
** †Meristella laevis
** †Meristella nasuta
** †Meristella praenuntia
** †Meristella princeps
** †Meristella scitula
* †Meristina
** †Meristina nasuta
* †Merocrinus
** †Merocrinus corroboratus
** †Merocrinus typus
* †Mesocoelia
** †Mesocoelia gregaria – or unidentified comparable form
* †Mesodouvillina
** †Mesodouvillina varistriata
* †Mesoleptosrophia
** †Mesoleptosrophia junia
* †Mesoleptostrophia
** †Mesoleptostrophia junia
* †Mesopalaeaster – tentative report
** †Mesopalaeaster lanceolatus
* †Mesotrypa
** †Mesotrypa numiformis
** †Mesotrypa nummiformis
* †Metabaltoceras – type locality for genus
** †Metabaltoceras fusiforme – type locality for species
* †Metaconularia
* †Metaplasia
** †Metaplasia minuta
* †Metriophyllum
* †Michelia
** †Michelia whiteavesi – type locality for species
* †Michelinia
** †Michelinia stylopora
* †Michelinoceras
** †Michelinoceras aldenense
** †Michelinoceras rigidum
* †Microchilina
* †Microcyclus
* †Microdisca
* †Micromitra
* †Mictophyllum
** †Mictophyllum orientalis – type locality for species
* †Millardicurus
* †Mimella
** †Mimella borealis
** †Mimella vulgaris
* †Mirabiloceras
** †Mirabiloceras multitubulatum
* †Missisquoia
** †Missisquoia typicalis
* †Mitroceras
* Fossil of the Silurian eurypterid ("sea scorpion") Mixopterus †Mixopterus
** †Mixopterus multispinosus
* †Modiella
** †Modiella pygmaea
* †Modiodesma
** †Modiodesma modiolare
* †Modiolopsis
** †Modiolopsis anodontoides
** †Modiolopsis exanimis
** †Modiolopsis fabaformis
** †Modiolopsis modiolaris
** †Modiolopsis orthoconcavus – type locality for species
** †Modiolopsis ovata
** †Modiolopsis subalata
** †Modiolopsis subalatus
** †Modiolopsis subcarinata
** †Modiolopsis subcarinatus
* †Modiomorpha
** †Modiomorpha chemungensis
** †Modiomorpha concentrica
** †Modiomorpha mutiloides
** †Modiomorpha mytiloides
** †Modiomorpha pygmaea
** †Modiomorpha quadrula
** †Modiomorpha subalata
* †Modiomorphia
** †Modiomorphia alta
** †Modiomorphia concentrica
** †Modiomorphia mytiloides
* †Monoceratina
** †Monoceratina casei
* †Monodechenella
** †Monodechenella macrocephala
** †Monodechenella macrocephalus
* Fossils of the Early Devonian graptolite Monograptus †Monograptus
** †Monograptus clintonensis
* †Monotrypa
** †Monotrypa benjamini
** †Monotrypa osgoodensis – or unidentified comparable form
* †Monotrypella
** †Monotrypella abrupta – tentative report
** †Monotrypella arbuscula – tentative report
* †Montyoceras
** †Montyoceras arcuatum
** †Montyoceras curviseptatum
** †Montyoceras titaniforme
* †Moorea
* †Morania
* †Mourlonia
** †Mourlonia filitexta
** †Mourlonia plena
** †Mourlonia rugulata
** †Mourlonia subzona – type locality for species
* †Mucopraeca
** †Mucopraeca multicostata – type locality for species
* Fossilized shell of the Devonian brachiopod Mucrospirifer †Mucrospirifer
** †Mucrospirifer consobrinus
** †Mucrospirifer mucronata
** †Mucrospirifer mucronatus
** †Mucrospirifer tulliensis
* †Mucrospirifier
** †Mucrospirifier mucronatus
* †Mucrspirifer
** †Mucrspirifer mucronatus
* †Mulceodens
** †Mulceodens eboraceus – type locality for species
* †Multicostella
** †Multicostella platys
* †Murchisonia
** †Murchisonia micula
** †Murchisonia subulata
* †Muscrospirifer
** †Muscrospirifer mucronatus
* †Myalina – tentative report
** †Myalina newelli
* †Myelodactylus
** †Myelodactylus convolutus
** †Myelodactylus linae
* †Mytilarca
** †Mytilarca mytiliformis
** †Mytilarca oviformis
* †Mytilops
** †Mytilops praecedens

## N

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Nanahughmilleria
** †Nanahughmilleria clarkei
** †Nanahughmilleria prominens
* †Nanillaenus
** †Nanillaenus americanus
* †Nanno
** †Nanno noveboracum
* †Nanothyris
** †Nanothyris subglobosa – or unidentified comparable form
* †Naplesites
** †Naplesites naplesense
* †Naticonema
* Fossilized shell of the Early Devonian – Triassic sea snail Naticopsis †Naticopsis
* †Navispira – tentative report
* †Nemagraptus
* †Nematopora
** †Nematopora ovalis
** †Nematopora raripora
* †Neoaxon
* †Neokloedenella
* †Neozaphrentis
* †Nephriticeras
** †Nephriticeras metula
* †Nervostrophia
** †Nervostrophia nervosa
** †Nervostrophia plana
** †Nervostrophia tulliensis
* †Newportopora
** †Newportopora typicalis
* †Niagaracrinus
** †Niagaracrinus kopfi
* †Nicholsonella
** †Nicholsonella florida
* †Nieszkowskia – tentative report
** †Nieszkowskia satyrus
* †Nileoides
** †Nileoides perkinsi
* †Niobe
* Illustrations of fossilized foliage of the Carboniferous-Permian plant Noeggerathia †Noeggerathia
** †Noeggerathia gilboensis
* †Nowakia
** †Nowakia otomari
* †Nucleocrinus
* †Nucleospira
** †Nucleospira concinna
** †Nucleospira pisiformis
** †Nucleospira ventricosa
** †Nucleospira ventricosta
* Nucula
* Nuculana
* †Nucularca
** †Nucularca lorrainensis
** †Nucularca pectunculoides
* †Nuculites
** †Nuculites lamellata
** †Nuculites nyassa
** †Nuculites nyssa
** †Nuculites oblongatus
** †Nuculites scitulus
** †Nuculites triqueter
** †Nuculites triquiter
* Nuculoidea †Nuculoidea
** †Nuculoidea corbuliformis
** †Nuculoidea deceptriformis – type locality for species
** †Nuculoidea lirata
* †Nyassa
** †Nyassa arguata
** †Nyassa arguta
** †Nyassa dorsata
* †Nybyoceras
** †Nybyoceras cryptum
* †Nylanderina
** †Nylanderina goldringae

## O

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* Illustration of fossils of the Cambrian brachiopod Obolella †Obolella
* †Obolus
* †Octonaria
** †Octonaria bifurcata – type locality for species
* †Odontocephalus
** †Odontocephalus selenurus
* †Odontochile
** †Odontochile micrurus
* Restoration of the Late Ordovician-Middle Devonian trilobite Odontopleura †Odontopleura
* †Oepikina
* †Oepikodus
** †Oepikodus communis
* †Oistodus
** †Oistodus eutyphus
** †Oistodus venustus
* †Olenellus
* †Olenoides
* †Omospira
** †Omospira trentonensis
* †Oncoceras
** †Oncoceras constrictum
** †Oncoceras pristinum
** †Oncoceras subrectum
* †Oneotodus – report made of unidentified related form or using admittedly obsolete nomenclature
** †Oneotodus cavus
* †Onoceras
* †Ontaria
* †Onychoplecia
** †Onychoplecia longirostris
* †Oonoceras
** †Oonoceras perkinsi
** †Oonoceras seelyi
* †Ophileta
** †Ophileta discus – type locality for species
* †Opsiconidion
** †Opsiconidion praecursor – or unidentified comparable form
* †Orbiculoidea
** †Orbiculoidea lodensis
** †Orbiculoidea lodiensis
** †Orbiculoidea molina
** †Orbiculoidea newberryi
** †Orbiculoidea tenuistriata
** †Orbiculoidea truncata
** †Orbiculoidea vanuxemi – or unidentified comparable form
* †Orbignyella
* †Ordogeisonoceras
** †Ordogeisonoceras amplicameratum
* †Ormoceras
** †Ormoceras centrale – type locality for species
** †Ormoceras champlainense – type locality for species
** †Ormoceras schohariae – type locality for species
* †Orthambonites
** †Orthambonites acutiplicatus
** †Orthambonites exfoliata
* †Orthidium
** †Orthidium lamellosa
** †Orthidium lamellosum
* †Orthis
** †Orthis flabellites
** †Orthis lepidus
** †Orthis perveta
** †Orthis praeumbona
** †Orthis punctostriata
** †Orthis tenuidens
* †Orthoceras
** †Orthoceras abruptum
** †Orthoceras aristides
** †Orthoceras bassleri
** †Orthoceras clavatum
** †Orthoceras lativentrum
** †Orthoceras lentum
** †Orthoceras limulurus
** †Orthoceras luxum
** †Orthoceras missisquoi
** †Orthoceras modestum
** †Orthoceras multicameratum
** †Orthoceras progressum
** †Orthoceras rectiannulatum
** †Orthoceras sayi
** †Orthoceras vagum
** †Orthoceras virgulatum
* †Orthodesma
** †Orthodesma curtum
** †Orthodesma pulaskiense
* †Orthograptus
** †Orthograptus pageanus
** †Orthograptus quadrimucronatus
** †Orthograptus rivai
** †Orthograptus ruedemanni
* †Orthonota
** †Orthonota carinata
** †Orthonota parvula
** †Orthonota undulata
* †Orthonychia
** †Orthonychia concavum
** †Orthonychia conicum
** †Orthonychia dentalium
* †Orthospirifer
** †Orthospirifer mesastrialis
** †Orthospirifer mesastrialus
** †Orthospirifer mesatrialis
* †Orthostrophia
** †Orthostrophia fasciata
* †Orthotetes
* †Otarion
** †Otarion spinicaudatum
* †Oulodus
** †Oulodus petila
* †Ovoceras
* †Ozarkina
* †Ozarkodina
** †Ozarkodina confluens
** †Ozarkodina hadra
** †Ozarkodina polinclinata
** †Ozarkodina sagitta

## P

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Pachecdyceras
** †Pachecdyceras murale
* †Pachydicta
** †Pachydicta crassa
* †Pachydictya
** †Pachydictya acuta
** †Pachydictya crassa
** †Pachydictya sheldonensis
* †Pachyphyllum
** †Pachyphyllum crassicostatum
** †Pachyphyllum woodmani
* †Pachystrophia – tentative report
* †Pachystylostroma
** †Pachystylostroma champlainense – type locality for species
** †Pachystylostroma goodsellense
** †Pachystylostroma vallum
* Fossil of the trilobite Paciphacops †Paciphacops
** †Paciphacops logani
* †Paedeumias
* †Paeeumias
* †Pagetides
** †Pagetides elagans
* †Pagodia
** †Pagodia seelyi – type locality for species
* †Palaeacmaea
** †Palaeacmaea expansa – type locality for species
** †Palaeacmaea typica
* †Palaeactina
* †Palaeaster
** †Palaeaster niagarensis
* †Palaeocapulus
** †Palaeocapulus acutirostre
* †Palaeocaris – tentative report
** †Palaeocaris cuylerensis – type locality for species
* †Palaeocyclus
** †Palaeocyclus ratuloides
** †Palaeocyclus rotuloides
* †Palaeocystites
** †Palaeocystites tenuiradiatus
* †Palaeodictyota
* †Palaeoglossa
** †Palaeoglossa belli
** †Palaeoglossa perovata
* †Palaeoneilo
** †Palaeoneilo angusta
** †Palaeoneilo augusta
** †Palaeoneilo bisulcata
** †Palaeoneilo brevis
** †Palaeoneilo congregata
** †Palaeoneilo constricta
** †Palaeoneilo contracta
** †Palaeoneilo crassa
** †Palaeoneilo elongata
** †Palaeoneilo emarginata
** †Palaeoneilo fecunda
** †Palaeoneilo filosa
** †Palaeoneilo maxima
** †Palaeoneilo muta
** †Palaeoneilo plana
** †Palaeoneilo rudis
** †Palaeoneilo tenuistriata
* Life restoration of the Silurian-Devonian scorpion Palaeophonus †Palaeophonus
** †Palaeophonus osborni – type locality for species
* †Palaeophycus
** †Palaeophycus striatum
* †Palaeophyllum
** †Palaeophyllum multicaule
* †Palaeopinna
** †Palaeopinna flabellum
* †Palaeosaccus
* †Palaeosolen
* †Palaeosolon
** †Palaeosolon siliqui
* †Palaeozygopleura
** †Palaeozygopleura attenuata
** †Palaeozygopleura delphicola
** †Palaeozygopleura hamiltoniae
** †Palaeozygopleura laxa – type locality for species
** †Palaeozygopleura multiplicata – type locality for species
** †Palaeozygopleura noe – type locality for species
** †Palaeozygopleura sicula
** †Palaeozygopleura styliola – type locality for species
* †Palaeschara
** †Palaeschara incrustans
* †Palaozygopleura
** †Palaozygopleura hamiltoniae
* †Paleoclosterium
** †Paleoclosterium leptum
* †Paleocystites
** †Paleocystites tenuiradiatus
* †Paleodictyota
* †Paleodidymoprium
** †Paleodidymoprium didymum
* †Paleooedogonium
** †Paleooedogonium micrum
* †Paleophycus
** †Paleophycus striatum
* †Paleozygopleura
** †Paleozygopleura delphicola
* †Paleschara
** †Paleschara radiata
* †Palmatolepis
** †Palmatolepis triangularis
* †Panderodus
** †Panderodus panderi – or unidentified comparable form
** †Panderodus unicostatus
* †Panenka
** †Panenka hero
** †Panenka retusa
* †Parabolbina
* †Parabufina
** †Parabufina convexa
** †Parabufina subovalis
* Fossil of the Silurian-Early Devonian eurypterid ("sea scorpion") Paracarcinosoma †Paracarcinosoma
** †Paracarcinosoma scorpionis
* †Paracardium
** †Paracardium doris
* †Paraceraurus
** †Paraceraurus ruedemanni
* †Paracolocrinus
** †Paracolocrinus paradoxicus
* †Paraconularia
* †Paracyclas
** †Paracyclas arguta
** †Paracyclas devoniana
** †Paracyclas elliptica
** †Paracyclas lirata
** †Paracyclas rowleyi
** †Paracyclas rugosa
** †Paracyclas tenuis
* †Paradakeoceras
** †Paradakeoceras minor
** †Paradakeoceras planiventrum
* †Paraechmina
** †Paraechmina postica
** †Paraechmina spinosa
* †Paraendoceras
** †Paraendoceras depressum – type locality for species
** †Paraendoceras wappingerense – type locality for species
* Fossils of the Silurian-Middle Devonian eurypterid ("sea scorpion") Parahughmilleria †Parahughmilleria
** †Parahughmilleria maria
* †Parallelodon
** †Parallelodon hamiltoniae
* †Parallelopora
* †Parallelostroma
** †Parallelostroma foveolatum
** †Parallelostroma microporum – type locality for species
* †Parapanderodus
** †Parapanderodus striatus
* †Paraparchites
** †Paraparchites asymmetrica – type locality for species
* †Paraplethopeltis
** †Paraplethopeltis carinfera – type locality for species
* †Paraschmidtella
** †Paraschmidtella paralobata
* †Paraserratodontus
** †Paraserratodontus costatus
* Assemblage of the Early-Middle Devonian brachiopod Paraspirifer †Paraspirifer
** †Paraspirifer acuminatus
* †Parastrophina
* †Parazyga
** †Parazyga hirsuta
* †Parodiceras
** †Parodiceras discoideum
* †Paterula
* †Paucicrura
** †Paucicrura rogata
* †Paupospira
** †Paupospira bowdeni
* †Pelagiella
** †Pelagiella minutissima
** †Pelagiella primaeva
* †Pentagonia
** †Pentagonia unisulcata
* †Pentamerella
** †Pentamerella arata
** †Pentamerella aruta
** †Pentamerella pavilionensis
** †Pentamerella pavillionensis
** †Pentamerella pericosta
** †Pentamerella petoskyensis
* †Pentamerus
** †Pentamerus oblongus
** †Pentamerus ovalis
* †Periechocrinites
* Fossil of the Silurian-Carboniferous crinoid ("sea lily") Periechocrinus †Periechocrinus
** †Periechocrinus speciosus – or unidentified comparable form
* †Periodon
** †Periodon grandis
** †Periodon primum
* †Perissocrinus – type locality for genus
** †Perissocrinus papillatus – type locality for species
* †Peronopsis
** †Peronopsis evansi – type locality for species
** †Peronopsis primigenea – or unidentified comparable form
* †Perotrilites
** †Perotrilites conatus – or unidentified comparable form
* †Petasotheca – type locality for genus
** †Petasotheca minuta – type locality for species
* †Petigurus
** †Petigurus ellipticus – type locality for species
* †Petrocrania
** †Petrocrania hamiltoniae
** †Petrocrania prona
* Fossil of the Devonian trilobite Phacops rana †Phacops
** †Phacops cristata
** †Phacops triculcatus
** †Phacops trisulcata
** †Phacops trisulcatus
* †Phaenopora
** †Phaenopora clintoni
** †Phaenopora constellata
** †Phaenopora ensiformis
** †Phaenopora explanata
* †Phakelodus
** †Phakelodus terashimai
* †Phanerotrema
** †Phanerotrema labrosa – type locality for species
* †Pharciceras
** †Pharciceras amplexum
* †Phestia
** †Phestia diversa
** †Phestia rostellata
* †Philhedra
* †Phipidomella
** †Phipidomella vanuxemi
* †Phlyctiscapha
** †Phlyctiscapha subovata
* †Phoenixites
** †Phoenixites concentricus
* †Pholadella
** †Pholadella radiata
** †Pholadella radiatus
* †Pholadomorpha
** †Pholadomorpha pholadiformis
* †Pholidops
** †Pholidops linguloides
** †Pholidops squamiformis
** †Pholidops squammiformis
* †Pholidostrophia
** †Pholidostrophia nacrea
** †Pholidostrophia ovata
* †Phorocephala
** †Phorocephala setoni
* †Phragmoceras
* †Phragmodus
** †Phragmodus undatus
* †Phragmolites
** †Phragmolites compressus
* †Phragmosphaera – type locality for genus
** †Phragmosphaera incisus
** †Phragmosphaera lyra – type locality for species
** †Phragmosphaera natator
** †Phragmosphaera triliratus – or unidentified comparable form
* †Phthonia
** †Phthonia cylindrica
* Fossil of the Early Ordovician graptolite Phyllograptus †Phyllograptus
* †Phylloporina
** †Phylloporina asperatastriata
** †Phylloporina asperatostriata
** †Phylloporina asperostriata
** †Phylloporina incepta
* †Physemataspis
** †Physemataspis insularis
* †Pionoceras
** †Pionoceras pomponium
** †Pionoceras vokesi
* †Pionodema
* †Pisocrinus
* †Pittsfordipterus
** †Pittsfordipterus phelpsae
* †Placentella
** †Placentella elliptica – or unidentified comparable form
* †Placoblastus
** †Placoblastus lucina
* †Plaesiomys
** †Plaesiomys iphigenia
** †Plaesiomys strophomenoides
* †Platillaenus
** †Platillaenus erastusi
* Fossilized shell of the Silurian-Early Triassic sea snail Platyceras †Platyceras
** †Platyceras angulatum
** †Platyceras argo
** †Platyceras carinatum
** †Platyceras desmatum
** †Platyceras erectum
** †Platyceras gebhardi
** †Platyceras hemisphericum
** †Platyceras lineata
** †Platyceras lineatum
** †Platyceras niagarense
** †Platyceras niagarensis
** †Platyceras rarispinum
** †Platyceras reflexum
** †Platyceras rictum
** †Platyceras turbinata
** †Platyceras unisulcata
** †Platyceras ventricosum
** †Platyceras ventricosus
* †Platyorthis
** †Platyorthis planoconvexa
* †Platyrachella
* †Platyrochella
* Fossilized shell of the Middle Ordovician-Silurian brachiopod Platystrophia †Platystrophia
** †Platystrophia biforata
** †Platystrophia biforatus
** †Platystrophia longicardinalis
** †Platystrophia lynx
** †Platystrophia robusta
* †Playfordites
** †Playfordites tripartitus – or unidentified comparable form
* †Plectambonites
* †Plectatrypa
** †Plectatrypa nodostriata
* †Plectoceras
** †Plectoceras jason
** †Plectoceras jasoni
* †Plectodina
* †Plectodonta
* †Plectonotus
** †Plectonotus boucoti
** †Plectonotus trilobita
* †Plectorthis
** †Plectorthis exfoliata
* †Plectostroma
** †Plectostroma micum
* †Plethobolbina
** †Plethobolbina typicalis
* †Plethopeltis
** †Plethopeltis obtusus
* †Plethorhyncha
* †Plethorhynchia
* †Plethorthis
* †Plethospira
** †Plethospira cassina – type locality for species
* Fossil of the Silurian-Carboniferous tabulate coral Pleurodictyum †Pleurodictyum
** †Pleurodictyum americanum
** †Pleurodictyum convexa
** †Pleurodictyum convexum
** †Pleurodictyum cylindricum
** †Pleurodictyum cylindricus
** †Pleurodictyum dividua
** †Pleurodictyum stylopora
* †Pleuronotus
** †Pleuronotus decewi
** †Pleuronotus tioga – type locality for species
* †Pleurorima
** †Pleurorima kayseri – type locality for species
* Fossilized shell of a Pleurotomaria slit snail Pleurotomaria
** †Pleurotomaria apicialis – type locality for species
* †Plicanoplia
* †Plicoplasia
* †Plinthokonion – tentative report
** †Plinthokonion psamminon – type locality for species
* †Pliomerops
** †Pliomerops canadensis
* †Plumalina
* †Podolella
* †Pojetaconcha
** †Pojetaconcha beecheri
* †Pojetaia
** †Pojetaia runnegari
* †Poleumita
** †Poleumita crenulata
** †Poleumita vernonensis – type locality for species
* Various conodont elements of Polygnathus †Polygnathus
* †Polygyrata
** †Polygyrata hunterensis – type locality for species
* †Polyplacognathus
** †Polyplacognathus ramosa
* †Polyplectella
** †Polyplectella mira
* †Polypora
** †Polypora incepta
* †Ponderodictya
** †Ponderodictya punctulifera
* †Ponticeras
** †Ponticeras perlatum
* †Pontobdellopsis
* †Poteriocrinus
** †Poteriocrinus dignatus
* †Praecardium
* †Praematuratropis – type locality for genus
** †Praematuratropis ovatus – type locality for species
* †Praewaagenoconcha
** †Praewaagenoconcha speciosa
* †Prasopora
** †Prasopora lenticularis
** †Prasopora sardesoni
** †Prasopora similatrix
** †Prasopora simulatrix
* †Primaspis
** †Primaspis crosotus
** †Primaspis trentonensis
* †Primitia
* †Primitiella
** †Primitiella unicornis
* †Primitiopsis
** †Primitiopsis punctulifera
* †Prionothyris
** †Prionothyris diobolaris
* †Prismostylus
** †Prismostylus fibratum
* †Pristeroceras
** †Pristeroceras timidum
* †Probeloceras
** †Probeloceras lutheri
* †Probillingsites
** †Probillingsites inflatus – type locality for species
* †Prochorites
** †Prochorites alveolatus
* †Productella
** †Productella arctirostrata
** †Productella belanskii
** †Productella boydii
** †Productella callawayensis
** †Productella dumosa
** †Productella navicella
** †Productella nevicella
** †Productella perplana
** †Productella rectispina
** †Productella speciosa
** †Productella spinulocosta
* †Proendoceras
* Restoration of the Silurian trilobite Proetus †Proetus
** †Proetus clarus
** †Proetus corycocus
** †Proetus corycoeus
** †Proetus haldemani
** †Proetus stokesi
* †Prolixocrinus
** †Prolixocrinus nodocaudis
* †Promourlonia
** †Promourlonia durhamensis
* †Proplina
** †Proplina cornutaformis
* †Propora
* †Prosaukia
** †Prosaukia spinula
* †Proscorpius – type locality for genus
** †Proscorpius osborni – type locality for species
* †Prosopeionum
** †Prosopeionum plexum – type locality for species
* †Prosseria
** †Prosseria grandis
* †Protaster
** †Protaster stellifer
* †Protaxocrinus
** †Protaxocrinus annellus
* †Proteoceras
** †Proteoceras moniliforme
** †Proteoceras perkinsi
* †Proteokalon
** †Proteokalon petryi
* †Proterocameroceras
** †Proterocameroceras brainerdi
* †Prothyris
** †Prothyris lanceolata
* †Protocalyptraea – type locality for genus
** †Protocalyptraea marshalli – type locality for species
** †Protocalyptraea styliophila – type locality for species
* †Protochthonius – type locality for genus
** †Protochthonius gilboa – type locality for species
* †Protocrisina
* †Protocycloceras
** †Protocycloceras catulus
** †Protocycloceras furtivum
** †Protocycloceras lamarcki
** †Protocycloceras xerxes
* †Protodouvillina
** †Protodouvillina inequistrata
** †Protodouvillina inequistriata
* †Protokionoceras
* †Protolepidodendron
** †Protolepidodendron gilboense
** †Protolepidodendron scharianum
* †Protoleptostrophia
** †Protoleptostrophia concava
** †Protoleptostrophia lirella
** †Protoleptostrophia perplana
* †Protomegastrophia
* †Protopanderodus
* †Protoscolex
* †Protozyga
* †Proturritella
** †Proturritella historicum
* †Protypus
* †Pseudaviculopecten
** †Pseudaviculopecten fasciculatus
** †Pseudaviculopecten princeps
* †Pseudoatrypa
** †Pseudoatrypa devoniana
** †Pseudoatrypa entilformis
* †Pseudoatrypta
** †Pseudoatrypta devoniana – or unidentified comparable form
* †Pseudoblothrophyllum
** †Pseudoblothrophyllum arrectum
** †Pseudoblothrophyllum helderbergicum
** †Pseudoblothrophyllum helderbergium
** †Pseudoblothrophyllum munnsvillium
* †Pseudohornea
** †Pseudohornea diffusa
* †Pseudohornera
** †Pseudohornera diffusa
* †Pseudohydnoceras
** †Pseudohydnoceras erraticum
* †Pseudolingula
** †Pseudolingula rectilateralis
* Illustration of a fossil of the Silurian arthropod Pseudoniscus †Pseudoniscus
* †Pseudooneotodus
** †Pseudooneotodus bicornis
* †Pseudoplagiothyra
** †Pseudoplagiothyra praecursor
* †Pseudosphaerexochus
** †Pseudosphaerexochus approximus
** †Pseudosphaerexochus satyrus
** †Pseudosphaerexochus vulcanus
* †Pseudosporochnus
* †Pseudostictoporella
* †Pseudostylodictyon
** †Pseudostylodictyon lamottense
* Fossil of the primitive Devonian vascular plant Psilophyton †Psilophyton
** †Psilophyton grandis
* †Pteracontiodus
** †Pteracontiodus bransoni
* †Pterina
** †Pterina demissa
* †Pterinea
** †Pterinea emacerata
** †Pterinea insueta
** †Pterinea jordani – or unidentified comparable form
** †Pterinea waylandsmithi – type locality for species
* †Pterinopectan
** †Pterinopectan undosus
** †Pterinopectan vertumnus
* †Pterinopecten
** †Pterinopecten erectus
** †Pterinopecten hermes
** †Pterinopecten suborbicularis
** †Pterinopecten vertumnus
* †Pteriochaenia
** †Pteriochaenia fragilis
* †Pterochaenia
** †Pterochaenia fragilis
* †Pterospathodus
** †Pterospathodus amorphognathoides
* †Pterotheca
** †Pterotheca expansa
* Restoration of the Silurian-Middle Devonian eurypterid ("sea scorpion") Pterygotus †Pterygotus
** †Pterygotus cobbi
** †Pterygotus juvensis
** †Pterygotus monroensis
* †Ptilodictya
** †Ptilodictya plumea
* †Ptilograptus
* †Ptilonaster
** †Ptilonaster princeps
* †Ptiloporella
* †Ptomatis
** †Ptomatis patulus – type locality for species
** †Ptomatis rudis
* †Ptychagnostus
** †Ptychagnostus elegans
** †Ptychagnostus punctuosus
* †Ptychaspis
** †Ptychaspis speciosus
* †Ptychocrinus
** †Ptychocrinus medinensis
* †Ptychodesma
** †Ptychodesma knappianum
* †Ptychomphalina
** †Ptychomphalina lucina
* Fossils of the Cambrian trilobite Ptychoparia †Ptychoparia
** †Ptychoparia matheri – type locality for species
** †Ptychoparia minuta
* †Ptychopteria
** †Ptychopteria chemungensis
** †Ptychopteria elongata
** †Ptychopteria flabella
** †Ptychopteria flabellum
** †Ptychopteria mesacostalis
** †Ptychopteria proto
** †Ptychopteria subdecussata
* †Ptychosphaera
** †Ptychosphaera thalia
* †Pugnoides
** †Pugnoides pugnus
* †Punctomosea
** †Punctomosea cristata
* †Punctoprimitia
** †Punctoprimitia subaequalis
* †Pustulatia
** †Pustulatia pustulosa
* †Pyrenmoeus
** †Pyrenmoeus cuneatus
* †Pyrenomoeus
** †Pyrenomoeus cuneatus
* †Pyrgopostibulla – type locality for genus
** †Pyrgopostibulla belli – type locality for species
* †Pyrocystites
* †Pyronema

## Q

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Quasillites
** †Quasillites angulatus
** †Quasillites subobliquus

## R

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Radnoria
* †Rafinesquina
** †Rafinesquina alternata
** †Rafinesquina deltoidea
** †Rafinesquina mucronata
** †Rafinesquina nasuta
** †Rafinesquina obscura
** †Rafinesquina praecursor
** †Rafinesquina prestonensis
* †Raphistoma
** †Raphistoma stamineum
** †Raphistoma striatum
* †Raphistomina
** †Raphistomina undulata
* Fossil of the Early Ordovician-Permian benthic alga Receptaculites †Receptaculites
** †Receptaculites monticulatus – or unidentified related form
* †Redstonia
** †Redstonia knaeckei – type locality for species
* †Reimannia
** †Reimannia aldenense
** †Reimannia aldenese
* †Rellimia
** †Rellimia thomsonii
* †Remopleuridella – tentative report
** †Remopleuridella obtusa
* †Remopleurides
** †Remopleurides canadensis
* †Remopleuridiella – tentative report
** †Remopleuridiella obtusa – type locality for species
* †Rensselaeria
** †Rensselaeria elongata – or unidentified comparable form
* †Rensselaerina – tentative report
* †Reptaria
** †Reptaria stolonifera
* †Resserella
** †Resserella elegantula
* †Reteocrinus
** †Reteocrinus stellaris
* †Reteograptus
* †Reteporina
* †Retichonetes
** †Retichonetes obscurus – or unidentified related form
** †Retichonetes setigerus
* †Reticularia
** †Reticularia bicastata
** †Reticularia bicostata
** †Reticularia biocostata
* †Reticularograptus
** †Reticularograptus retiforme
* †Reticulograptus
** †Reticulograptus retiforme
* †Retiolites
** †Retiolites geinitzianus
** †Retiolites venosus
* †Retispira
** †Retispira leda
** †Retispira otsego – type locality for species
** †Retispira repertus – type locality for species
* †Retusotriletes
** †Retusotriletes goensis
** †Retusotriletes rotundus
* †Rhabdosporites
** †Rhabdosporites langi
** †Rhabdosporites langii
* †Rhabdostropha
* †Rhacophyton
** †Rhacophyton ceratangium
* †Rhinidictya
** †Rhinidictya bryozoan
** †Rhinidictya fenestrata
* Fossil of the Silurian eurypterid ("sea scorpion") Rhinocarcinosoma †Rhinocarcinosoma
** †Rhinocarcinosoma cicerops
* †Rhinopora
** †Rhinopora tuberculosa
** †Rhinopora verrucosa
** †Rhinopora verrucus
* †Rhipidomella
** †Rhipidomella circulus
** †Rhipidomella cyclas
** †Rhipidomella hybrida
** †Rhipidomella hybridia
** †Rhipidomella leucosia
** †Rhipidomella penelope
** †Rhipidomella trigona
** †Rhipidomella vanuxemi
* †Rhipidomelloides
** †Rhipidomelloides oblata
* †Rhipidothyris
** †Rhipidothyris lepida
** †Rhipidothyris mulitplicata
** †Rhipidothyris plicata
* †Rhodesognathus
** †Rhodesognathus elegans
* †Rhombopora
** †Rhombopora rhombifera
* †Rhombotrypa
** †Rhombotrypa spinulifera
* †Rhymokalon
** †Rhymokalon trichium
* Fossilized shell of the Silurian-Eocene articulate brachiopod Rhynchonella †Rhynchonella
** †Rhynchonella bidens
** †Rhynchonella bidentata
** †Rhynchonella emacerata
** †Rhynchonella formosa
* †Rhynchospirina
* †Rhynchotrema
** †Rhynchotrema increbescens
* †Rhynchotreta
** †Rhynchotreta americana
** †Rhynchotreta robusta
* †Rhynidictya
** †Rhynidictya fenestrata
* †Rhyssochonetes
** †Rhyssochonetes aurora
** †Rhyssochonetes filicostatus
* †Rhytimia
** †Rhytimia buffaloensis – or unidentified comparable form
* †Rhytimya
* †Ribeiria
** †Ribeiria taylori – type locality for species
* †Richina
** †Richina selenicristata – type locality for species
* †Rimouskia
* †Ripidiorhynchus – tentative report
* †Robergiella
** †Robergiella brevilingua – or unidentified comparable form
* †Roemerella
** †Roemerella grandis
* †Romingeria
* †Rominigeria
* †Romnigeria
* †Ropalonaria
* †Rossodus
** †Rossodus manitouensis
* Rostricellula
** †Rostricellula major
** †Rostricellula plena
** †Rostricellula pristina
* †Roundyella – tentative report
** †Roundyella concentrica – type locality for species
* †Rudolfoceras
** †Rudolfoceras cornuoryx
* †Ruedemannia
** †Ruedemannia lirata
** †Ruedemannia trilix
* †Ruedemannipterus
** †Ruedemannipterus stylonuroides
* Fossil of the arthropod burrow ichnogenus Rusophycus †Rusophycus
** †Rusophycus biloba
** †Rusophycus pudicum
** †Rusophycus subangulatum

## S

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Saccarchites
* †Saccocrinus
* †Salopina
** †Salopina type locality for species A – informal
* †Sandbergeroceras
** †Sandbergeroceras enfieldense – type locality for species
** †Sandbergeroceras syngonum
* †Sanguinolites
** †Sanguinolites contractus
** †Sanguinolites cuneatus
** †Sanguinolites solenoides
** †Sanguinolites tiogensis
** †Sanguinolites truncatus
* †Sapphicorhynchus
** †Sapphicorhynchus sappho
* †Saratogia
* †Sawdonia
** †Sawdonia ornata
* †Scalites
** †Scalites angulatus
* †Scalpellodus
** †Scalpellodus longipinnatus
* †Scapanocrinus
** †Scapanocrinus muricatus
* †Scaptina
** †Scaptina incuda – type locality for species
* †Scendium
** †Scendium pyramidale
* Fossils of the Cambrian mollusc Scenella †Scenella
** †Scenella montrealensis
** †Scenella pretensa
** †Scenella robusta
* †Scenophyllum
** †Scenophyllum conigerum
* †Schindewolfoceras
** †Schindewolfoceras chemungense
** †Schindewolfoceras equicostatum – or unidentified related form
* †Schizambon
** †Schizambon duplicimuratum
* †Schizo (genus)
* †Schizocrania
** †Schizocrania filosa
* †Schizocrinus
** †Schizocrinus nodosus
* †Schizodus
** †Schizodus chemungensis
* †Schizonema
* †Schizopea
** †Schizopea typica – type locality for species
* †Schizophoria
** †Schizophoria impressa
** †Schizophoria mulistriata
** †Schizophoria multistriata
** †Schizophoria striatula
** †Schizophoria tioga
** †Schizophoria tulliensis
** †Schizophoria with
* †Schizopodium
** †Schizopodium mummii
* †Schizotreta
** †Schizotreta tenuilamellata
* †Schmidtella
** †Schmidtella crassimarginata
* †Schuchertella
** †Schuchertella arctostriata
** †Schuchertella arctostriatus
** †Schuchertella elegans
** †Schuchertella interstriata
** †Schuchertella marylandica – or unidentified comparable form
** †Schuchertella pandora
** †Schuchertella parva
** †Schuchertella subplana
** †Schuchertella sulcifer
** †Schuchertella tenuis
** †Schuchertella woolworthanus
* †Schuchetella
** †Schuchetella arctostriatus
* †Scolopodus
** †Scolopodus insculptus
* †Scutellum
** †Scutellum niagarensis
* †Scyphocrinites
* †Seelyoceras
** †Seelyoceras raei
* †Semiacontiodus
** †Semiacontiodus iowensis
** †Semiacontiodus nogamii
* †Semicoscinium
** †Semicoscinium tenuiceps
* Serpula
* †Serpulites
* †Serpulospira
** †Serpulospira eboracensis – type locality for species
** †Serpulospira laxus
* †Serrodiscus
* †Serrulacaulis
** †Serrulacaulis furcatus
* †Serulacaulis
** †Serulacaulis furcatus
* †Shumardia
* Fossilized stump of the Carboniferous-Permian club moss relative Sigillaria †Sigillaria
** †Sigillaria gilboensis
* †Silurovelella – type locality for genus
** †Silurovelella casteri – type locality for species
* †Sinochonetes
** †Sinochonetes lepidus
* †Sinuites
** †Sinuites cancellatus – type locality for species
* †Sinuitina
** †Sinuitina acutilira
** †Sinuitina brevilineatus
* †Sinuopea
** †Sinuopea emminencis – type locality for species
** †Sinuopea parva – type locality for species
* †Siphonophrentis
** †Siphonophrentis gigantea
* †Siphonophretis
** †Siphonophretis variabilis
* †Skenidioides
** †Skenidioides pyramidale
** †Skenidioides pyramidalis
* †Skenidium
** †Skenidium insignis – or unidentified comparable form
** †Skenidium pyramidale
** †Skenidium pyramidalis
* Life restoration of the Silurian eurypterid ("sea scorpion") Slimonia †Slimonia
* †Solenopleura
* †Solenopora
** †Solenopora compacta
* †Sowerbyella
** †Sowerbyella curdvillensis
** †Sowerbyella kayi
** †Sowerbyella senaria
** †Sowerbyella sericea
** †Sowerbyella transversalis
* †Spathella
** †Spathella typica
* †Spatiopora
** †Spatiopora maculata
* †Spatipora
** †Spatipora maculata
* Fossil of the Middle Ordovician-Silurian trilobite Sphaerexochus †Sphaerexochus
** †Sphaerexochus parvus
** †Sphaerexochus valcourensis
* †Sphaerocoryphe
** †Sphaerocoryphe goodnovi
** †Sphaerocoryphe robusta
* †Sphaeromanticoceras
** †Sphaeromanticoceras oxy
** †Sphaeromanticoceras rhynchostomum
** †Sphaeromanticoceras rickardi
* †Sphaerospongia
** †Sphaerospongia tessellata – or unidentified related form
* †Sphenophragmus
** †Sphenophragmus nanus
* †Sphenosphaera
** †Sphenosphaera fiscellostriata
* †Sphenotreta
** †Sphenotreta acutirostris
* †Spinatrypa
** †Spinatrypa hystrix
** †Spinatrypa spinosa
* †Spinocespitosus
** †Spinocespitosus parallelus
* †Spinocyrtia
** †Spinocyrtia granulosa
** †Spinocyrtia macbridei
** †Spinocyrtia marcyi
* †Spinocyrtina
** †Spinocyrtina granulosa
* †Spinoplasia
** †Spinoplasia gaspensis – or unidentified comparable form
* †Spinozonotriletes – tentative report
** †Spinozonotriletes naumovii – or unidentified comparable form
* †Spinulicosta
** †Spinulicosta spinulicosta
* †Spinulocosta
** †Spinulocosta spinulocosta
* †Spinyplatyceras
** †Spinyplatyceras dumosum
** †Spinyplatyceras fornicatum
* Fossilized shell of the Late Ordovician-Late Triassic brachiopod Spirifer †Spirifer
** †Spirifer anchiasper
** †Spirifer anchiaspirifer
** †Spirifer aroostookensis
** †Spirifer crispatus
** †Spirifer crispus
** †Spirifer duodenarius
** †Spirifer eudora
** †Spirifer macra
** †Spirifer macrothyris
** †Spirifer macrus
** †Spirifer marcyi
** †Spirifer mesicostalis
** †Spirifer mesistrialis
** †Spirifer niagarensis
** †Spirifer posterus
** †Spirifer raricosta
** †Spirifer repertus
** †Spirifer sculptilis
** †Spirifer subcuspidatus
** †Spirifer sulcata
** †Spirifer sulcatus
** †Spirifer varicosa
** †Spirifer varicosta
** †Spirifer williamsi
* †Spirobis
* †Spirobus
* †Spirodentalium – tentative report
* †Spirophyton
* Fossil of the burrow ichnogenus Spirorhaphe †Spiroraphe
** †Spiroraphe galtensis
* Spirorbis
** †Spirorbis laxa
* †Spyroceras
** †Spyroceras crotalum
** †Spyroceras geneva
** †Spyroceras nuntium
* †Staurograptus
* †Stegerhynchus
** †Stegerhynchus acinus
** †Stegerhynchus neglectum
** †Stegerhynchus neglectus
* †Stenokoleos
** †Stenokoleos bifidus
** †Stenokoleos holmesii
* †Stenoloron
** †Stenoloron areyi – type locality for species
* †Stenopareia
** †Stenopareia globosus
* †Stenopora
** †Stenopora fibrosa
** †Stenopora patula
* †Stenoscisma
* †Stephanocrinus
** †Stephanocrinus angulatus
** †Stephanocrinus gemmiformis
* †Stereolasma
** †Stereolasma rectum
* †Stereospyroceras
** †Stereospyroceras clintoni
* †Steriolasma
** †Steriolasma rectum
* †Steroolasma
** †Steroolasma rectum
* †Stewartophyllum
** †Stewartophyllum intermittens
* †Stictopora
** †Stictopora blackensis
** †Stictopora fenestrata
** †Stictopora labyrintha
** †Stictopora labyrinthica
* †Stictoporella
* †Stictotrypa
** †Stictotrypa punctipora
* †Stigmatella
* †Stipatocrinus
* Stomatopora
* †Straelenia
* †Straparolis
* †Straparollina
** †Straparollina hudsoni
* †Straparollus
** †Straparollus clymenioides
** †Straparollus planodiscus
* †Strataster
** †Strataster maciverorum – type locality for species
* †Streblocrinus – type locality for genus
** †Streblocrinus brachiatus – type locality for species
* †Strepsodiscus
** †Strepsodiscus hoyti
* †Streptelasma
** †Streptelasma corniculum
* †Strepulites
** †Strepulites divectus – type locality for species
* †Striacoceras
** †Striacoceras typum
* †Striatochonetes
** †Striatochonetes flexuosus
** †Striatochonetes flexuousus
** †Striatochonetes setigera
** †Striatochonetes setigerus
* †Striatopora
** †Striatopora flexuosa
* †Striatostyliolina
* †Stricklandia
* †Strigigenalis
** †Strigigenalis cassinensis
* †Striispirifer
** †Striispirifer niagarensis
* †Strobeus
** †Strobeus onondagaensis
* †Stromatocerium
** †Stromatocerium rugosum
* †Stromatopora
** †Stromatopora constellata
* †Strophalosia
** †Strophalosia truncata
* †Stropheodonta
** †Stropheodonta demissa
* †Strophochonetes
** †Strophochonetes cornutus
* †Strophodonta
** †Strophodonta demissa
* Fossilized shell of the Ordovician-Silurian brachiopod Strophomena †Strophomena
** †Strophomena acutiradiata
** †Strophomena conradi
** †Strophomena convexa
** †Strophomena corrugata
** †Strophomena crassa
** †Strophomena deflecta
** †Strophomena inaequistriata
** †Strophomena incurvata
** †Strophomena inequiradiata
** †Strophomena iowensis
** †Strophomena orthididea
** †Strophomena pentagonia
** †Strophomena profunda
** †Strophomena subplana
* †Strophoneila
** †Strophoneila punctulifera
* †Strophonella
** †Strophonella ampla
** †Strophonella headleyana – or unidentified comparable form
** †Strophonella leavenworthana
** †Strophonella patenta
** †Strophonella punctulifera
** †Strophonella striata
* †Strophostylus
** †Strophostylus cancellata
** †Strophostylus fitchi – type locality for species
** †Strophostylus rotundata – type locality for species
* Stylaraea
** †Stylaraea parva
* †Stylioina
** †Stylioina fissurella
* †Styliolina
** †Styliolina fissurella
* †Styliolinid
* †Stylonema
** †Stylonema robusta – type locality for species
* Life restoration of the Devonian eurypterid ("sea scorpion") Stylonurus †Stylonurus
* †Subligaculum
** †Subligaculum aculeatus – type locality for species
** †Subligaculum laciniosum
* †Subretepora
* †Subulites
** †Subulites elongatus
** †Subulites prolongata
* †Suecoceras
** †Suecoceras marcoui
* †Sulcella
** †Sulcella emicatusa – type locality for species
* †Sulcoretepora
** †Sulcoretepora inscissurata
* †Sulcoretopera
* †Sulcoretopora
** †Sulcoretopora incisurata – or unidentified comparable form
* †Svalbardia
** †Svalbardia banksii
* †Syaptocrinus
** †Syaptocrinus nintius
* †Symphysurina
** †Symphysurina convexa
** †Symphysurina myopia – type locality for species
* †Synaptocrinus
** †Synaptocrinus nuntius
* †Synaptophyllum
** †Synaptophyllum simcoense
* †Synbathocrinus
** †Synbathocrinus canandaigua
* †Synphoria – report made of unidentified related form or using admittedly obsolete nomenclature
* †Synphoroides
** †Synphoroides pleuroptyx
* †Syringaxon
** †Syringaxon rudis
* Fossil of the Devonian tabulate coral Syringopora †Syringopora

## T

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* †Tabulophyllum
** †Tabulophyllum orientale
* Fossils of the Devonian plant stem morphogenus Taeniocrada Fossils of the Devonian plant stem morphogenus Taeniocrada †Taeniocrada
** †Taeniocrada stilesvillensis
* †Taeniopora
** †Taeniopora exigua
* †Taineopora
* †Taonurus
** †Taonurus caudagalli
* †Tarphyceras
** †Tarphyceras clarkei
** †Tarphyceras farnsworthi
** †Tarphyceras multicameratum
* †Technophorus
** †Technophorus cancellatus – type locality for species
* †Tellinopsis
** †Tellinopsis subemarginata
** †Tellinopsis subemargula
* Fossilized shell of the Early Ordovician-Late Devonian probable mollusc Tentaculites †Tentaculites
** †Tentaculites bellulus
** †Tentaculites elongatus
** †Tentaculites gracilis
** †Tentaculites gyracanthus
** †Tentaculites minutus
** †Tentaculites scalariformis
** †Tentaculites scaleriformis
** †Tentaculites simmondsi
** †Tentaculites spiculus
* †Tetradium
** †Tetradium cellulosum
* †Tetranodoceras
** †Tetranodoceras transversum
* †Tetranota
** †Tetranota bidorsata
* †Tetrasacculus
** †Tetrasacculus magnivelatus – or unidentified comparable form
** †Tetrasacculus paeneteichus – type locality for species
* Diagram of the branches of the Middle-Late Devonian vascular plant Tetraxylopteris †Tetraxylopteris
** †Tetraxylopteris BR4
** †Tetraxylopteris schmidtii
* †Thaerocrinus
** †Thaerocrinus crenatus
* †Thalamocrinus
* †Thaleops
** †Thaleops longispina – type locality for species
** †Thaleops ovata
** †Thaleops punctata
** †Thaleops raymondi
* †Thamnopora
* †Thamnoptychia
** †Thamnoptychia limbata
** †Thamnoptychia ornata
** †Thamnoptychia romingeri
* †Thiemella
** †Thiemella danbyi
** †Thiemella danybi
** †Thiemella leonensis
* †Thlipsurella – tentative report
* †Thylacocrinus
** †Thylacocrinus clarkei
* †Tormosocrinus
** †Tormosocrinus furberi
* †Tornoceras
** †Tornoceras arcuatum
** †Tornoceras typum – or unidentified comparable form
** †Tornoceras uniangulare
* †Tremanotus
** †Tremanotus angustata
** †Tremanotus profundus – type locality for species
* †Trematis
** †Trematis terminalis
* †Trematopora
** †Trematopora tuberculata
** †Trematopora tuberculosa
* †Trematospira
** †Trematospira camura
** †Trematospira gibbosa
** †Trematospira perforata – or unidentified comparable form
* Fossil preserving limbs and antennae as pyrite (fool's gold) of the underside of the Late Ordovician trilobite Triarthrus †Triarthrus
** †Triarthrus becki
** †Triarthrus eatoni
* †Tricornina
* †Triendoceras
** †Triendoceras orthoseptatum
* †Trigonodictya
** †Trigonodictya acuta
* †Trigonograptus
* †Trigrammaria
* †Triloboxylon
** †Triloboxylon arnoldii
** †Triloboxylon ashlandicum
* †Trimerus
** †Trimerus delphinocephalus
* †Triplesia
* †Tripteroceras
** †Tripteroceras cariniferum – type locality for species
* †Tritonophon
** †Tritonophon trilobatus
* Fossilized shell of the Middle-Late Devonian nautiloid cephalopod Trochoceras †Trochoceras
* †Trocholites
** †Trocholites ammonius
** †Trocholites gracilis
** †Trocholites ruedemanni
* †Trochonema
** †Trochonema dispar
** †Trochonema rectangularis
* †Trochonemella
** †Trochonemella knoxvillensis
* †Tropidocoryphe
** †Tropidocoryphe richterorum – type locality for species
* †Tropidodiscus
** †Tropidodiscus curvilineatus
* †Tropidoleptus
** †Tropidoleptus carinatus
* †Tropodus
** †Tropodus comptus
* †Truncalosia
** †Truncalosia truncata
* †Truyolsoceras
** †Truyolsoceras bicostatum – type locality for species
* Illustration of a fossilized shell in multiple views of the Silurian monoplacophoran mollusc Tryblidium reticulatum. Head region is to the left. †Tryblidium
* †Tryplasma
** †Tryplasma fascicularium – type locality for species
* †Tubulibairdia
** †Tubulibairdia windomensis
* †Tullypothyridina
** †Tullypothyridina venestula
* †Tylothyris
** †Tylothyris clarksvillensis
** †Tylothyris mesa
** †Tylothyris mesacostalis
** †Tylothyris mesicostalis
** †Tylothyris novamexicana
** †Tylothyris pauliformis
* †Tyserella
** †Tyserella pauliformis
* †Tytthocrinus
** †Tytthocrinus arcarius – type locality for species

## U

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* †Ulrichia
** †Ulrichia acricula
** †Ulrichia fragilis
** †Ulrichia illinearis
** †Ulrichia spinifera
** †Ulrichia ventura – type locality for species
* †Ulrichodina
** †Ulrichodina abnormalis
* †Ulrichostylus
* †Uncinulus
** †Uncinulus abruptus
** †Uncinulus mutabilis
** †Uncinulus nucleolatus
** †Uncinulus pyramidatus
* †Unitrypa
* †Uromystrum
** †Uromystrum brevispinum
** †Uromystrum minor

## V

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* †Vaginoceras
** †Vaginoceras oppletum
* †Valcourea
** †Valcourea strophomenoides
* †Valcouroceras
** †Valcouroceras bovinum
** †Valcouroceras cyclops
** †Valcouroceras elongatum – type locality for species
** †Valcouroceras obesum
** †Valcouroceras tenuiseptum
* †Vaningenoceras
** †Vaningenoceras indomitum
** †Vaningenoceras styliforme
* †Vanuxemia
** †Vanuxemia limbata
* †Variabiloconus
** †Variabiloconus bassleri
** †Variabiloconus lineatus
* †Vassaroceras
** †Vassaroceras henrietta – type locality for species
* †Velibeyrichia
* †Vermiforafacta
** †Vermiforafacta rollinsi
* †Vermiforichnus
** †Vermiforichnus clarkei
* †Vernonaspis
* †Vertumnia
** †Vertumnia reversa
* †Vetupraeca
** †Vetupraeca duplicata
** †Vetupraeca vetusta – type locality for species
* †Viriatellina
* †Vogdesia
** †Vogdesia bearsi
** †Vogdesia obtusus

## W

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* Fossilized head of the Silurian eurypterid ("sea scorpion") Waeringopterus †Waeringopterus
** †Waeringopterus cumberlandicus
** †Waeringopterus vernonensis
* †Walcottoceras
* †Walliserodus
** †Walliserodus sancticlairi
* †Warrenella
** †Warrenella laevis
** †Warrenella magna
* †Wellsites
** †Wellsites tynani
** †Wellsites williamsi – type locality for species
* †Whidbornella
** †Whidbornella hirsuta
** †Whidbornella lachrymosa
* †Whiteavsia
** †Whiteavsia expansa
** †Whiteavsia undata
* †Whitfieldella
** †Whitfieldella cylindrica
** †Whitfieldella intermedia
** †Whitfieldella naviformis
** †Whitfieldella naviormis
** †Whitfieldella nitida
** †Whitfieldella oblata
* †Whitfieldia – tentative report
* †Whitfieldoceras
** †Whitfieldoceras lenticontractum – type locality for species
* †Wurmiella
** †Wurmiella excavata

## X

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* †Xenocladia
** †Xenocladia medullosina
* †Xystostrophia
** †Xystostrophia woolworthana

## Y

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* Life restoration of the probable Cambrian mollusc Yochelcionella †Yochelcionella
** †Yochelcionella greenlandica
* †Yochelsonella – type locality for genus
** †Yochelsonella compressa – type locality for species
* †Yorba

## Z

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* †Zaphrenthis
** †Zaphrenthis bilateralis
** †Zaphrenthis turbinata
* †Zittelloceras
** †Zittelloceras praecedens – type locality for species
* Fossil of the feeding trace ichnogenus Zoophycos †Zoophycos
* †Zostocrinus
** †Zostocrinus ornatus
* †Zygobolba
** †Zygobolba crta
** †Zygobolba curta
** †Zygobolba decora
** †Zygobolba elongata – tentative report
** †Zygobolba excavata
** †Zygobolba inflata
** †Zygobolba intermedia
** †Zygobolba oblonga
** †Zygobolba prolixa
** †Zygobolba rectangula
** †Zygobolba robusta
* †Zygobolbina
** †Zygobolbina conradi
* †Zygosella
** †Zygosella vallata – or unidentified comparable form
* †Zygospira
** †Zygospira modesta