# List of the Paleozoic life of Tennessee

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

## A

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* †Abatocrinus
** †Abatocrinus grandis
* †Acanthocrania
* †Acantholaminatus
** †Acantholaminatus multistylus
** †Acantholaminatus typicus
* †Acodus
* †Actinoceras
** †Actinoceras capitolinum
** †Actinoceras cuvieri
** †Actinoceras tenuifilum
* †Actinocrinites
* †Adinocrinus
* †Agaricocrinus
** Fossilized calyx of the Carboniferous crinoid ("sea lily") Agaricocrinus americanus, or the mushroom crinoid †Agaricocrinus americanus
** †Agaricocrinus crassus
* †Agassizocrinus
** †Agassizocrinus dissimilis
* †Agelacrinus
** †Agelacrinus cincinnatiensis
* †Alaskadiscus
** †Alaskadiscus cristatus
** †Alaskadiscus subacutus
* †Allagecrinida
* †Alloprosallocrinus
** †Alloprosallocrinus conicus
* †Allosaccus
* †Ambonychia
** †Ambonychia intermedius
* †Ammodiscella
* †Amphilichas
** †Amphilichas halli
* †Amphipsalidiocrinus
* †Amplexizaphrentis
* Fossils of the Ordovician-Permian bryozoan Amplexopora †Amplexopora
** †Amplexopora ampla
** †Amplexopora columbiana
** †Amplexopora convoluta
** †Amplexopora cylindracea
** †Amplexopora filiasa
** †Amplexopora petasiformis
* †Amplexus
* †Ampyx
* †Ampyxina
* †Anaphragma
** †Anaphragma hermitagensis
** †Anaphragma mirabile
* †Anastrophia
** †Anastrophia internascens
** †Anastrophia verneuili
* †Anazyga
** †Anazyga recurvirostra
* †Ancistrorhyncha
** †Ancistrorhyncha costata
* †Anisopleurella
* †Anolotichia
** †Anolotichia explanata
** †Anolotichia ponderosa
* †Anopliopsis
* †Anoplotheca
** †Anoplotheca concava
* †Aphelaspis
** †Aphelaspis walcotti – type locality for species
* Restoration of the Late Ordovician nautiloid cephalopod Aphetoceras being preyed upon by a Cameroceras †Aphetoceras
** †Aphetoceras oderi
* †Apodasmocrinus
* †Apopliopsis
* †Archinacella
** †Archinacella patelliformis
* †Arthroclema
** †Arthroclema striatum
* †Astraeospongium
* †Astreptodictya
* †Astylospongia
** †Astylospongia praemorsa
* †Atactoporella
** †Atactoporella insueta
** †Atactoporella mundula
** †Atactoporella typicalis
* †Atelelasma
* †Atelestocrinus
* †Athrophragma
* †Atrypa
** †Atrypa reticularis – report made of unidentified related form or using admittedly obsolete nomenclature
* †Atrypina
** †Atrypina disparilis
** †Atrypina imbricata
* †Aulacella
* Fossil of the Late Ordovician-Permian tabulate coral Aulopora †Aulopora
** †Aulopora trentonensis
* †Auloporella
* †Austinella
** †Austinella kankakensis
* †Australosutura
* †Avaoceras
** †Avaoceras wellsense

## B

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* Bairdia
* †Barycrinus
** †Barycrinus rhombiferus
** †Barycrinus sculptus
** †Barycrinus spurius
** †Barycrinus stellatus
* †Batherocystis
** †Batherocystis appressa
* †Bathyurus
** †Bathyurus extans
* †Batostoma
** †Batostoma confertum
** †Batostoma dendroidea
** †Batostoma fertile
** †Batostoma inutile
** †Batostoma libana
** †Batostoma minnesotensis
** †Batostoma ramosum
** †Batostoma subcrassum
* †Batostomella
** †Batostomella subgracilis
* Fossilized shell of the Silurian-Early Triassic mollusc Bellerophon †Bellerophon
* †Belodella
** †Belodella silurica
* †Belodina
* †Bembexia
* †Bergaueria
* †Billingsaria
* †Billingsites
** †Billingsites williamsportensis – tentative report
* †Bimuria
** †Bimuria superba
* †Botryocrinus
** †Botryocrinus polyxa
* †Bouskacrinus
** †Bouskacrinus waldronensis
* †Brachymetopus
* †Brachyprion
** †Brachyprion purduei
* †Breyeria
** †Breyeria rappi – type locality for species
* †Bucania
* †Bucanospira – type locality for genus
** †Bucanospira expansa – type locality for species
* Life restoration of the Early Ordovician-Silurian trilobite Bumastus †Bumastus
* †Buskopora
* †Byssonychia
** †Byssonychia radiata
* †Bythopora
** †Bythopora dendrina
** †Bythopora gracilis
** †Bythopora laxta

## C

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* Calloporina
** †Calloporina parva
* †Calopora
* Fossil of the Early Ordovician-Early Devonian trilobite Calymene †Calymene
** †Calymene niagarensis
* †Calyptaulax
* †Camarotoechia
* †Camerella
* †Carinaropsis
** †Carinaropsis cunulae
* †Cartersoceras – type locality for genus
** †Cartersoceras shideleri – type locality for species
* †Caryocrinites
** †Caryocrinites persculptus
* †Cataschisma
** †Cataschisma convexum
* †Catillocrinus
** †Catillocrinus tennesseeae
* †Catoraphiceras
** †Catoraphiceras lobatum
* †Ceramoporella
** †Ceramoporella grandis
** †Ceramoporella ingenua
** †Ceramoporella ohioensis
** †Ceramoporella whitei
* †Ceratopea
** †Ceratopea grandis
* †Ceratopsis
** †Ceratopsis intermedia
* †Ceraurinus
** †Ceraurinus scofieldi
* Fossil of the Middle-Late Ordovician trilobite Ceraurus †Ceraurus
** †Ceraurus milleranus
** †Ceraurus pleurexanthemus – or unidentified comparable form
* †Cestites
** †Cestites mirabilis
* †Champlainopora – tentative report
* †Chasmataspis
** †Chasmataspis laurencii
* †Chasmatopora
** †Chasmatopora sublaxa
* †Chaulistomella
** †Chaulistomella ridleyensis
* †Chazydictya – tentative report
* †Cheirurus
** †Cheirurus niagarensis
* †Chepultapecia
** †Chepultapecia leiosomella
* †Chonetes
** †Chonetes glenparkensis – or unidentified related form
* †Christiania
* Assemblage of fossilized shells of the Ordovician brachiopod Cincinnetina †Cincinnetina
** †Cincinnetina meeki
* †Cladochonus
** †Cladochonus amplexus
** †Cladochonus crassus
* †Cleiocrinus
** †Cleiocrinus tessallatus
* †Cleiothyridina
* †Cliophorus
** †Cliophorus fabula
* †Clisospira
* †Coeloclema
** †Coeloclema consimile
** †Coeloclema inflatum
** †Coeloclema pierceanum
* †Colaptomena
** †Colaptomena obesa
* †Columbicrinus
** †Columbicrinus crassus
* †Columnaria
** †Columnaria alveolata
** †Columnaria crenulata
** †Columnaria halli
** †Columnaria stellata
* †Coniculospongia
** †Coniculospongia radiata
* †Conocardium
* †Conotreta
* Fossil of the Ordovician bryozoan Constellaria †Constellaria
** †Constellaria emaciata
** †Constellaria fischeri
** †Constellaria florida
** †Constellaria lamellosa
** †Constellaria polystomella
** †Constellaria teres
** †Constellaria varia
* †Coolinia
** †Coolinia subplana
* †Coopericystis – type locality for genus
** †Coopericystis pyriformis – type locality for species
* †Cornulites
** †Cornulites minor
** †Cornulites proprius
* †Coronocystis
* †Corynotrypa
** †Corynotrypa delicatula
** †Corynotrypa inflata
** †Corynotrypa tennesseensis
** †Corynotrypa turgida
* †Costalocrinus
** †Costalocrinus cornutus
* Crania
** †Crania laelia
* †Craniops
* †Crepicephalus
** †Crepicephalus comus
** †Crepicephalus thoosa
* †Crepipora
** †Crepipora hemispherica
** †Crepipora simulans
* †Crurithyris
** †Crurithyris parva
* Fossil of the Devonian-Triassic arthropod trackway ichnogenus Cruziana †Cruziana
* †Ctenobolbina
** †Ctenobolbina subcrassa
* †Ctenodonta
** †Ctenodonta gibberula
** †Ctenodonta hartsvillensis
** †Ctenodonta hermitagenesis
** †Ctenodonta hermitagensis
** †Ctenodonta obliqua
** †Ctenodonta subrotunda
* †Ctenostoma
* †Cuneamya
* †Cupulocorona
** †Cupulocorona gemmiformis
** †Cupulocorona tennesseensis
* †Cyatbaxonia
** †Cyatbaxonia tantilla
* †Cyathaxonia
* Fossilized calyx and partial stem of the Silurian-Permian crinoid ("sea lily") Cyathocrinites †Cyathocrinites
** †Cyathocrinites farleyi
** †Cyathocrinites iowensis
* †Cycloholcus – type locality for genus
** †Cycloholcus nummus – type locality for species
* †Cyclonema
** †Cyclonema bilix
** †Cyclonema fluctuatum
** †Cyclonema mediale
** †Cyclonema minuta
** †Cyclonema praecipitum – type locality for species
** †Cyclonema varicosum
* †Cyclora
** †Cyclora pulcella
* †Cyphaspis
** †Cyphaspis christyi
* †Cyphotrypa
** †Cyphotrypa acervulosa
** †Cyphotrypa frankfortensis – or unidentified comparable form
* †Cypricardinia
** †Cypricardinia alta
* †Cyrtina
** †Cyrtina burlingtonensis
* Restoration of the Cambrian-Middle Devonian nautiloid cephalopod Cyrtoceras †Cyrtoceras
** †Cyrtoceras convidale
** †Cyrtoceras stonense – tentative report
** †Cyrtoceras vallandighami
* †Cyrtodonta
** †Cyrtodonta grandis
** †Cyrtodonta huronensis
** †Cyrtodonta saffordi
* †Cyrtodontula
* †Cyrtolites
** †Cyrtolites inornatum
** †Cyrtolites ornatus
** †Cyrtolites retrorsus
* †Cyrtonella
* †Cyrtonotella
* †Cyrtospira
** †Cyrtospira tortilis – type locality for species
* †Cyrtostropha
** †Cyrtostropha salteri
* †Cystodictya

## D

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* †Dactylogonia
** †Dactylogonia incrassata
* †Dalejina
** †Dalejina hybrida – report made of unidentified related form or using admittedly obsolete nomenclature
** †Dalejina newsomensis
* †Dalmanella
** †Dalmanella bassleri – or unidentified comparable form
** †Dalmanella eminens
** †Dalmanella fertilis
** †Dalmanella jugosa
** †Dalmanella subcarinata
** †Dalmanella tersa
* Fossil of the Late Ordovician-Middle Devonian trilobite Dalmanites †Dalmanites
** †Dalmanites retusus
** †Dalmanites verrucosus
** †Dalmanites vigilans
* †Dapsilodus
** †Dapsilodus obliquicostatus
** †Dapsilodus praecipuus
** †Dapsilodus sparsus
* †Dasyporella
* †Dawsonoceras
* †Decaschisma
** †Decaschisma lorae
** †Decaschisma pulchellum
* †Deceptrix
* †Decoriconus
** †Decoriconus fragilis
* †Dekayella
** †Dekayella foliacea
** †Dekayella praenuntia
** †Dekayella ridleyana
** †Dekayella trentonensis
** †Dekayella ulrichi
* †Deliablastus
** †Deliablastus cumberlandensis
* †Delthyris
** †Delthyris perlamellosa
* †Dendrocrinus
* †Dermatostroma
** †Dermatostroma cavernosum
** †Dermatostroma scabra
** †Dermatostroma tyronensis
* †Diabolirhynchia
** †Diabolirhynchia acinus
* †Dianulites
** †Dianulites petropolitanus – or unidentified comparable form
* †Diceromyonia
** †Diceromyonia tersa
* †Dichocrinus
* †Dicoelosia
** †Dicoelosia varica
* †Dicranopora
** †Dicranopora fragilis
* †Dielasma
* †Dimerocrinites
** †Dimerocrinites carleyi
** †Dimerocrinites inornatus
** †Dimerocrinites occidentalis
* †Dimorphichnus
* †Dinorthis
** †Dinorthis carleyi
** †Dinorthis pectinella
** †Dinorthis proavita
** †Dinorthis retrorsa
* †Diploclema
* †Diplotrypa
** †Diplotrypa catenulata
** †Diplotrypa dubia
* †Distomodus
** †Distomodus staurognathoides
* †Dolatocrinus
** †Dolatocrinus helderbergianus
* †Doleroides
* †Dolichoharpes
* †Doraclatum
* †Doraclotum
* †Dorytreta
* †Douglasocaris
** †Douglasocaris collinsi
* †Drepanella
** †Drepanella ampla
** †Drepanella elongata
** †Drepanella macra
* †Dunderbergia – tentative report
* †Dystactospongia
** †Dystactospongia insolens
** †Dystactospongia minor

## E

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* †Eatonia
** †Eatonia tennesseensis
* Fossil of the Early-Middle Ordovician cystoid echinoderm Echinosphaerites †Echinosphaerites
* †Ectenoglossa
* †Ectomaria
** †Ectomaria adventa – type locality for species
** †Ectomaria prisca
* †Edriocrinus
* †Elliptoglossa
* †Endocycloceras
** †Endocycloceras perannulatum
* †Enterolasma
** †Enterolasma strictum
* †Eodictyonella (formerly Dictyonella)
** †Eodictyonella gibbosa
** †Eodictyonella reticulata
* †Eohalysiocrinus
** †Eohalysiocrinus stigmatus
** †Eohalysiocrinus type locality for species 1 – informal
** †Eohalysiocrinus type locality for species 2 – informal
* †Eoleperditia
* †Eoplectodonta
* †Eospirifer
** †Eospirifer radiatus
* †Eotomaria
** †Eotomaria canalifera
** †Eotomaria dryope
** †Eotomaria labiosa
* †Eremotrema
* Fossilized calyx and partial stem of the Carboniferous crinoid ("sea lily") Eretmocrinus †Eretmocrinus
** †Eretmocrinus magnificus
* †Eridotrypa
** †Eridotrypa aedilis
** †Eridotrypa briareus
** †Eridotrypa mutabilis
* †Escharopora
** †Escharopora angularis
** †Escharopora briareus
** †Escharopora confluens
** †Escharopora falciformis
** †Escharopora libana
** †Escharopora maculata – or unidentified comparable form
** †Escharopora pavonia
** †Escharopora ramosa
** †Escharopora subramosa
** †Escharopora subrecta
* Fossilized calyx of the Silurian-Middle Devonian crinoid ("sea lily") Eucalyptocrinites †Eucalyptocrinites
** †Eucalyptocrinites caelatus
** †Eucalyptocrinites crassus
* †Eucladocrinus
** †Eucladocrinus millebrachiatus
* †Eumorphocystis – tentative report
* †Eunema
** †Eunema centralis
* †Euomphalopsis
** †Euomphalopsis involuta
* †Eurychilina
** †Eurychilina aequalis
** †Eurychilina subradiata
* †Eurydictya
* †Euryoblastus
** †Euryoblastus veryi
* †Eutrochoceras

## F

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* †Fascifera
** †Fascifera stonensis
* †Favistella
* †Favositella
** †Favositella epidermata
* †Favosites
** †Favosites conicus
** †Favosites forbesi
** †Favosites spinigerus
* †Fenestella
* †Fletcheria
** †Fletcheria incerta
* Front (left) and right side (right) views of an enrolled fossil of the Middle Ordovician-Silurian trilobite Flexicalymene †Flexicalymene
** †Flexicalymene meeki
** †Flexicalymene senaria
* †Foerstecystis
** †Foerstecystis obliqua
* †Foerstephyllum
* †Foerstia
** †Foerstia ohioensis
* †Forbesiocrinus
** †Forbesiocrinus wortheni

## G

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* †Gasconadia
** †Gasconadia putilla
* †Gaulocrinus
** †Gaulocrinus bordeni
** †Gaulocrinus veryi
* †Geniculifera
* †Geraocrinus
** †Geraocrinus sculptus
* Fossilized calyx and partial stem of the Devonian-Carboniferous crinoid ("sea lily") Gilbertsocrinus †Gilbertsocrinus
** †Gilbertsocrinus tuberosus
* †Ginkgospongia
** †Ginkgospongia foliata
* †Girvanella
* †Glyphaspis – tentative report
* †Glyptocrinus
** †Glyptocrinus decadactylus
** †Glyptocrinus subglobosus
* †Glyptograptus
* †Glyptorthis
** †Glyptorthis assimilis
** †Glyptorthis bellarugosa
** †Glyptorthis insculpta
** †Glyptorthis irregularis – type locality for species
** †Glyptorthis maquoketensis
* †Gonioceras
** †Gonioceras anceps
** †Gonioceras occidentale
* †Goniotrypa
** †Goniotrypa bilateralis
* †Graphiadactyllis
** †Graphiadactyllis lineata
* †Graptodicta
** †Graptodicta fruticosa
* †Graptodictya
** †Graptodictya dendroidea
** †Graptodictya provia
* †Gravicalymene
* Multiple views of a fossil of the Ordovician horn coral Grewingkia †Grewingkia
** †Grewingkia canadensis
* †Griffithidella
* †Grifithidella
* †Gypidula

## H

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* †Hadroblastus
* †Hagnocrinus
** †Hagnocrinus crenus – type locality for species
* Fossil of the Ordovician bryozoan ("moss animal") Hallopora †Hallopora
** †Hallopora angularis
** †Hallopora dalei
** †Hallopora dumalis
** †Hallopora florencia
** †Hallopora multitabulata
** †Hallopora onealli
** †Hallopora pulchella
** †Hallopora ramosa
** †Hallopora rugosa
** †Hallopora spissata
* †Halysiocrinus
** †Halysiocrinus cumberlandensis
** †Halysiocrinus tunicatus
* †Haplistion
** †Haplistion lobatum
* †Hebertella
** †Hebertella frankfortensis
** †Hebertella occidentalis
** †Hebertella sinuata
* †Hedeina
** †Hedeina eudora
* †Hedstroemia
* Fossilized shell of the Silurian mollusc Helcionopsis †Helcionopsis
** †Helcionopsis striata
* †Helicelasma
** †Helicelasma rusticum
* †Helicotoma
** †Helicotoma declivis
** †Helicotoma granosa
** †Helicotoma planulatoides
** †Helicotoma subquadrata
** †Helicotoma tennesseensis
* †Helopora
** †Helopora spiniformis
* †Hemidictya
** †Hemidictya lebanonensis
* †Hemiphragma
** †Hemiphragma irrasum
** †Hemiphragma ottawaensis
* †Hesperorthis
** †Hesperorthis australis
** †Hesperorthis tricenaria
* †Heterorthis
** †Heterorthis clytie
* †Heterospongia
** †Heterospongia subramosa
* †Heterotrypa
** †Heterotrypa echinata
** †Heterotrypa exovaria
** †Heterotrypa frondosa
** †Heterotrypa magnopora
** †Heterotrypa parulipora
** †Heterotrypa parvulipora
** †Heterotrypa patera
** †Heterotrypa praenuntia
** †Heterotrypa rugosa
** †Heterotrypa simplex
** †Heterotrypa solitaria
** †Heterotrypa stonensis
** †Heterotrypa subpulchella
** †Heterotrypa subramosa
** †Heterotrypa subtrentonensis
** †Heterotrypa tuberculata
* †Hexacrinites
* †Hibbertia
* †Hindia
** †Hindia parva
** †Hindia sphaeroidalis
* †Hiscobeccus
** †Hiscobeccus capax
* Fossilized shells of the Ordovician-Carboniferous sea snail Holopea †Holopea
* †Homoeospira
** †Homoeospira evax
* †Homotrypa
** †Homotrypa arbuscula
** †Homotrypa callosa
** †Homotrypa centralis
** †Homotrypa curvata
** †Homotrypa flabellaris
** †Homotrypa grandis
** †Homotrypa minnesotensis
** †Homotrypa similis
** †Homotrypa subramosa
** †Homotrypa tabulata
** †Homotrypa tuberculata
* †Homotrypella
** †Homotrypella hospitalis
** †Homotrypella nodosa
* †Hormotoma
** †Hormotoma columbiana
** †Hormotoma gracilis
* †Howellella
** †Howellella crispa – or unidentified comparable form
* †Hudsonaster
** †Hudsonaster narrowayi
* †Hustedia
†Hyolithes
** †Hyolithes newsomensis

## I

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* Fossil of the Middle Ordovician trilobite Illaenus †Illaenus
* †Ischadites
** †Ischadites turbinatus – or unidentified comparable form
* †Isochilina
** †Isochilina ampla
** †Isochilina columbiana
** †Isochilina jonesi
** †Isochilina saffordi
* †Isophragma
** †Isophragma extensum
** †Isophragma subabbreviatum – type locality for species
* †Isorthis
** †Isorthis pygmaea
* Fossil of the Middle-Late Ordovician giant trilobite Isotelus. †Isotelus

## K

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* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Kallimorphocrinus
* †Kallimorrhocrinus
* †Kirkbya
** †Kirkbya fernglepensis
* †Kirkbyella
* †Kloedenia
** †Kloedenia praenuntia
* †Kockelella
** †Kockelella amsdeni
** †Kockelella ortus
** †Kockelella ranuliformis
** †Kockelella stauros
** †Kockelella variabilis
** †Kockelella walliseri
* †Krausella
** †Krausella arcuata

## L

* 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
* †Labriproductus – tentative report
* †Lambeophyllum
** †Lambeophyllum profundum
* †Lampadosocrinus
* †Lampterocrinus
* †Leangella
** †Leangella tennesseensis
* †Lecanocrinus
** †Lecanocrinus pusilla
** †Lecanocrinus pusillus
* †Leiochonetes
* †Leperditella
** †Leperditella tumida
* †Leperditia
** †Leperditia appressa
** †Leperditia appresso
** †Leperditia columbiana
** †Leperditia fabulites
** †Leperditia pondi
** †Leperditia tumidula
* †Lepidocoleus
* †Lepidocyclus
** †Lepidocyclus manniensis
* †Leptaena
** †Leptaena moniquensis
** †Leptaena rhomboidalis
** †Leptaena richmondensis
* †Leptaenisca
** †Leptaenisca concava
* †Leptellina
* †Leptostrophia
* †Lichenaria
** †Lichenaria carterensis
** †Lichenaria globularis
** †Lichenaria grandis
** †Lichenaria parva
* †Licrophycus
** †Licrophycus libana
* †Lingulasma
** †Lingulasma matutinum – type locality for species
* Illustration of a fossilized shell of the Cambrian-Late Ordovician brachiopod Lingulella †Lingulella
* †Lingulops
** †Lingulops cliftonensis
** †Lingulops norwoodi
* †Lioclemella
** †Lioclemella bifurcata
* †Liospira
** †Liospira americana
** †Liospira decipens
** †Liospira progne
** †Liospira subconcava
** †Liospira vitruvia
* †Lissatrypa – tentative report
* †Lobomelocrinus
** †Lobomelocrinus obconicus
** †Lobomelocrinus rugatus
* Fossil of the Ordovician trilobite Lonchodomas †Lonchodomas
* †Lophospira
** †Lophospira conoidea
** †Lophospira milleri
** †Lophospira obliqua
** †Lophospira perangulata – type locality for species
** †Lophospira producta
** †Lophospira selecta – type locality for species
** †Lophospira superba – type locality for species
* †Loxobucania
** †Loxobucania emmonsi
** †Loxobucania nashvillensis – type locality for species
* †Loxonema
* †Lyriocrinus
** †Lyriocrinus melissa
* †Lyrodesma
* †Lytospira
** †Lytospira undulatus

## 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
* †Maclurina
** †Maclurina bigsbyi
* †Macluritella
** †Macluritella uniangulata
* †Maclurites
** †Maclurites magnus
** †Maclurites nitidus
* †Macrocrinus
* †Macropleura
* †Macrostylocrinus
** †Macrostylocrinus fasciatus
** †Macrostylocrinus striatus
* †Magnuscrinus
** †Magnuscrinus kammeri
** †Magnuscrinus praegravis
* †Manespira
** †Manespira rotunda – type locality for species
* †Marginatia
* †Marsupiocrinus
* †Mauryella
** †Mauryella mammillata
* †Meekopora
** †Meekopora clausa – or unidentified comparable form
* †Megamyonia
** †Megamyonia unicostata
* †Meilsonia
* †Menoieidina
* †Merista
** †Merista nitida
* Illustration (lower right, entry 15) of a fossilized shell in front and side views of the Silurian-Late Devonian brachiopod Meristella †Meristella
** †Meristella atoka
* †Meristina
** †Meristina maria
** †Meristina rectirostra
* †Mesotrypa
** †Mesotrypa angularis
** †Mesotrypa crustulata
** †Mesotrypa dubia
* †Mespilocrinus
** †Mespilocrinus romingeri
* †Metichthyocrinus
** †Metichthyocrinus clarkensis
** †Metichthyocrinus tiaraeformis
* †Metriophyllum
** †Metriophyllum deminutivum
** †Metriophyllum diminutivum
* †Michelinia
* †Michellinia
* †Mimella
** †Mimella borealis
* †Mitoclema
** †Mitoclema cinctosum
* †Modiolodon
** †Modiolodon ganti
** †Modiolodon oviformis
** †Modiolodon winchelli
* †Modiolopsis
** †Modiolopsis consimilis – tentative report
** †Modiolopsis modiolaris
** †Modiolopsis truncatus
* †Monomorphichnus
* †Monotrypa
* †Monticulipora
** †Monticulipora cincinnatiensis
** †Monticulipora compacta
** †Monticulipora discula
** †Monticulipora disicula
** †Monticulipora intersita
** †Monticulipora mammulata
** †Monticulipora molesta
* †Mulceodens
* †Multicostella
** †Multicostella plena – type locality for species
* †Myelodactylus

## 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
* †Nanillaenus
* †Nematopora
* †Nemtatopora
* †Newportopora
* †Newsomella
** †Newsomella revolutadivaricata
** †Newsomella ulrichi
* †Nicholsonella
** †Nicholsonella frondifera
** †Nicholsonella pulchra
** †Nicholsonella vaupeli – or unidentified comparable form
* †Nipterocrinus
** †Nipterocrinus monroensis
* †Nolichuckia
** †Nolichuckia casteri
* †Nucelospira
** †Nucelospira rowleyi
* †Nucleospira
** †Nucleospira pisiformis
** †Nucleospira rowleyi
* †Nucularca
** †Nucularca pectunculoides
* †Nuculopsis
* †Nyctopora

## 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
* †Oepikina
* †Omospira
** †Omospira laticincta
* †Onychoplecia
* †Ophileta
** †Ophileta supraplana
* †Ophiletina
** †Ophiletina sublaxa
* †Opikina
** †Opikina glabella
** †Opikina speciosa
* †Orbiculoidea
** †Orbiculoidea cellulosa
* †Orbignyella
** †Orbignyella multitabulata
** †Orbignyella nodosa
** †Orbignyella sublamellosa
** †Orbignyella wetherbyi
* †Orthambonites
* †Orthoceras
* †Orthodesma
* †Orthograptus
* †Orthorhynchula
** †Orthorhynchula linneyi
* †Orthostrophia
** †Orthostrophia strophomenoides
* †Ottoseetaxis
* †Ovatia
* †Ozarkodina
** †Ozarkodina bohemica
** †Ozarkodina confluens
** †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
* †Pachydicta
** †Pachydicta grandis
* †Pachydictya
** †Pachydictya foliata – or unidentified comparable form
** †Pachydictya senilis
* †Pachystrophia
** †Pachystrophia contiguus – type locality for species
* Fossil of the trilobite Paciphacops †Paciphacops
** †Paciphacops logani
* †Palaeacis
** †Palaeacis enormis
* †Palaeocrinus
** †Palaeocrinus sulcatus
* †Palaeophycus
* †Palaeostrophomena
** †Palaeostrophomena superba – type locality for species
* †Paleoalveolites
* †Panderodus
** †Panderodus panderi – tentative report
** †Panderodus unicostatus
* †Parachaetetes – tentative report
* †Paracyrtolites
** †Paracyrtolites subplanus
* †Paradichocrinus
** †Paradichocrinus planus
* †Paraliospira
** †Paraliospira abrupta – type locality for species
* †Parvohallopora
** †Parvohallopora granda
** †Parvohallopora pulchella
* †Passalocrinus
** †Passalocrinus triangularis
* †Paterula
** †Paterula perfecta
* †Paucicrura
** †Paucicrura quadrata
* †Paupospira
** †Paupospira bowdeni
** †Paupospira burginensis
** †Paupospira oweni
** †Paupospira sumnerensis
** †Paupospira tropidophora
* †Paurorthis
** †Paurorthis longa
* Fossilized theca of the Carboniferous blastoid echinoderm ("sea bud") Pentremites †Pentremites
** †Pentremites princetonensis
** †Pentremites pulchellus
* †Perimecocoelia
* †Peronopora
** †Peronopora compressa
** †Peronopora decipiens
** †Peronopora milleri
** †Peronopora mundula
** †Peronopora pavonia
** †Peronopora weirae
* †Petalichnus
* †Petigopora
** †Petigopora gregaria
** †Petigopora petechialis
* †Petrocrania
** †Petrocrania scabiosa
* †Phaenopora
* †Phanocrinus
** †Phanocrinus sagillatus – type locality for species
* †Pharetrolites
* †Phillibole
** †Phillibole conkini – or unidentified comparable form
* †Phimocrinus
* †Phragmolites
** †Phragmolites cellulosus
** †Phragmolites dyeri
** †Phragmolites triangularis – type locality for species
* †Phycodes
* †Phyllodictya
** †Phyllodictya frondosa
* †Phylloporina
** †Phylloporina clathrata
** †Phylloporina reticulata
* †Piltonia
** †Piltonia tennesseensis
* †Pionodema
** †Pionodema aberstadti – type locality for species
** †Pionodema minuscula
** †Pionodema subaequata
* †Pionomena
* †Pisocrinus
** †Pisocrinus gemmiformis
** †Pisocrinus quinquelobus
* †Plaesiomys
** †Plaesiomys bellistriatus
** †Plaesiomys proavitus
** †Plaesiomys subquadrata
* Fossils of the burrow ichnogenus Planolites †Planolites
* †Platyceras – type locality for genus
** †Platyceras nelsoni – type locality for species
** †Platyceras niagarense
** †Platyceras plebium
** †Platyceras princeps – type locality for species
* †Platycrinites
** †Platycrinites hemisphaericus
** †Platycrinites saffordi
* Fossilized shell of the Middle Ordovician-Silurian brachiopod Platystrophia †Platystrophia
** †Platystrophia acutilirata
** †Platystrophia amoena
** †Platystrophia colbiensis
** †Platystrophia crassa
** †Platystrophia cypha
** †Platystrophia elegantula
** †Platystrophia extensa
** †Platystrophia globosa
** †Platystrophia hermitagensis
** †Platystrophia juvenis
** †Platystrophia laticosta
** †Platystrophia nitida
** †Platystrophia ponderosa
** †Platystrophia precursor
** †Platystrophia strigosa
** †Platystrophia sublaticosta
* †Plectambonites
** †Plectambonites clarksvillensis
** †Plectambonites saxea
** †Plectambonites sericeus
* †Plectoceras
** †Plectoceras bondi
* †Plectorthis
* †Plectospira
* Fossil of the Silurian-Carboniferous tabulate coral Pleurodictyum †Pleurodictyum
* †Pliomerops
* †Plumulites
* †Polydeltoideus
* †Polyplacognathus
* †Prasopora
** †Prasopora contigus
** †Prasopora falesi
** †Prasopora insularis
** †Prasopora nodosa
** †Prasopora patera
** †Prasopora simulatrix
* †Primitiella
** †Primitiella constricta
* †Prismostylus
** †Prismostylus fibratum
* Proboscina
** †Proboscina auloporoides
** †Proboscina frondosa
* †Productina
** †Productina sampsoni – tentative report
* †Proetides – tentative report
* Restoration of the Silurian trilobite Proetus †Proetus
** †Proetus parviusculus
* †Prokopicrinus
** †Prokopicrinus barricki
* †Protarea
** †Protarea richmondensis
* †Proteoceras
** †Proteoceras tyronensis
* †Protopanderodus
* †Protoryncha
** †Protoryncha ridleyana
* †Protosalvinia
* †Pseudobythocyoris
* †Pseudooneotodus
** †Pseudooneotodus bicornis
* †Pseudotythocyoris
* †Pterinea
** †Pterinea cincinnatiensis
** †Pterinea demissa
* †Pterotheca
** †Pterotheca saffordi
** †Pterotheca undulata
* †Pterygometopus
** †Pterygometopus carleyi
** †Pterygometopus troosti
* †Pterygometrus
** †Pterygometrus troosti
* †Ptilotrypa
** †Ptilotrypa obliquata
* †Ptychopleurella
** †Ptychopleurella bassleri
* †Punctospirifer
** †Punctospirifer subellipticus
* †Pygodus

## 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
* †Quadratia

## 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
* †Rafinesquina
** †Rafinesquina alternata
** †Rafinesquina hermitagensis
** †Rafinesquina ponderosa
* †Raphistoma
** †Raphistoma striatum
* †Raphistomina
** †Raphistomina lapicida
** †Raphistomina modesta
* †Renalcis
* †Resserella
** †Resserella elegantula
* †Retrorsirostra
** †Retrorsirostra carleyi
* †Rhabdocrinus
* †Rhinidictya
** †Rhinidictya basalis
** †Rhinidictya lebanonensis
** †Rhinidictya nashvillensis
** †Rhinidictya nicholsoni
** †Rhinidictya salemensis
** †Rhinidictya tabulata
** †Rhinidictya trentonensis
* †Rhipidomella
** †Rhipidomella emarginata
* †Rhipidomelloides
** †Rhipidomelloides oblata
* †Rhipidomena
* †Rhombopora
* †Rhombotrypa
** †Rhombotrypa quadrata
* †Rhychotrema
** †Rhychotrema increbescens
* †Rhynchocamera
** †Rhynchocamera varians
* †Rhynchopora
* †Rhynchospirina
** †Rhynchospirina formosa
* †Rhynchotrema
** †Rhynchotrema dentatum
** †Rhynchotrema increbescens
** †Rhynchotrema perlamellosum
* †Rhynchotreta
** †Rhynchotreta americana
* †Rhytiophora
* †Robergia
* Rostricellula
** †Rostricellula orientalis
* †Rugosochonetes
* Fossil of the arthropod burrow ichnogenus Rusophycus †Rusophycus

## 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
* †Saccocrinus
** †Saccocrinus christyi
* †Saccospongia
** †Saccospongia danvillensis
** †Saccospongia laxata
* †Saffordotaxis
** †Saffordotaxis incrassatus – or unidentified comparable form
* †Sagenocrinites
* Illustration of fossilized shells of the mysterious Cambrian organism Salterella †Salterella
** †Salterella billingsi
* †Schizambon
* †Schizolopha – type locality for genus
** †Schizolopha textilis – type locality for species
* †Schizopea
** †Schizopea grandis
* †Schuchertella
** †Schuchertella louisianensis
* †Schuchertocystis
** †Schuchertocystis radiata
* †Scolithos
** †Scolithos columbiana
* †Scyphocrinites
* †Septopora
* †Sievertsia
* †Sinuopea
** †Sinuopea basiplanata
* †Siphonotreta
** †Siphonotreta americana – type locality for species
* †Skenidioides
* †Skenidium
** †Skenidium anthonense
** †Skenidium halli
* Fossils of the Cambrian-modern worm burrow ichnogenus Skolithos †Skolithos
* †Solenopora
** †Solenopora compacta
* †Sowerbyella
** †Sowerbyella lebanonensis
** †Sowerbyella varicostellata – type locality for species
* †Sphaerirhynchia
** †Sphaerirhynchia stricklandi
* †Sphaerocodium – tentative report
* †Sphaerocyclus – report made of unidentified related form or using admittedly obsolete nomenclature
** †Sphaerocyclus tuber
* †Sphenosphaera
** †Sphenosphaera capax
** †Sphenosphaera rogersensis
** †Sphenosphaera troosti
* Fossilized shell of the Late Ordovician-Late Triassic brachiopod Spirifer †Spirifer
** †Spirifer shephardi – or unidentified related form
** †Spirifer vernonensis – or unidentified related form
* Spirorbis
* †Springerocystis
** †Springerocystis longicallis
* †Spyroceras
** †Spyroceras bilineatum
* †Stegerhynchus
** †Stegerhynchus indianensis
** †Stegerhynchus whitei
** †Stegerhynchus whitii
* †Stellipora
** †Stellipora stipata
* †Stenoporida
* †Stereocrinus
* †Stictopora
* †Stictoporella
** †Stictoporella angularis
** †Stictoporella cribrilina
* †Stigmatella
** †Stigmatella distinctaspinosa
* †Stiodermiella
** †Stiodermiella amanita
** †Stiodermiella tetragona
* †Stiptocrinus
* †Straparollina
** †Straparollina cassina – type locality for species
* †Straparollus
* †Streblochondria
* †Streblopteria
* †Streblotrypa
* †Streptaster
** †Streptaster vorticellatus
* †Streptelasma
** †Streptelasma corniculum – or unidentified comparable form
** †Streptelasma parisiticum – tentative report
* †Striatopora
* †Strictoporella
** †Strictoporella cribilina
* †Striispirifer
* †Stromatocerium
** †Stromatocerium huronensis
** †Stromatocerium pustulosum
** †Stromatocerium rugosum – or unidentified comparable form
* †Stromatopora
** †Stromatopora arachnoidea
* †Stromatotrypa
** †Stromatotrypa incrusans
** †Stromatotrypa lamellata
** †Stromatotrypa regularis
* †Strophalosia – tentative report
* Fossilized shell of the Ordovician-Silurian brachiopod Strophomena †Strophomena
** †Strophomena concordensis
** †Strophomena filitexta
** †Strophomena incurvata
** †Strophomena neglecta
** †Strophomena odessae
** †Strophomena planoconvexa
** †Strophomena planodorsata
** †Strophomena planumbona
** †Strophomena sinuata
** †Strophomena subtenta
** †Strophomena vicina
* †Strophonella
** †Strophonella lineolata
** †Strophonella semifasciata
* †Strophopleura
* †Strophostylus
** †Strophostylus cyclostomus
* †Subulites
** †Subulites nanus
** †Subulites regularis
* †Synbathocrinus
** †Synbathocrinus swallovi

## T

* 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
* †Talarocrinus
** †Talarocrinus inflatus
** †Talarocrinus trijugis
* †Talasotreta – tentative report
** †Talasotreta alta – type locality for species
* †Tarphophragma
** †Tarphophragma ampla
** †Tarphophragma multitabulata
* †Taxocrinus
* Fossilized shell of the Early Ordovician-Late Devonian probable mollusc Tentaculites †Tentaculites
** †Tentaculites obliquus
* †Tetradella
** †Tetradella quadrilirata
* †Tetradium
** †Tetradium carterensis
** †Tetradium cellulosum
** †Tetradium columnare
** †Tetradium laxum
** †Tetradium minus
** †Tetradium syringoporoides
** †Tetradium ulrichi
* †Tetranota
** †Tetranota bidorsata
** †Tetranota sexcarinata
* †Tetrasacculus
** †Tetrasacculus stewartae
* †Thaerodonta
** †Thaerodonta recedens
* †Thalamocrinus
* †Thamniscus
* †Theloreus
* †Thinocrinus
** †Thinocrinus lowei
* Thurammina
* †Titanambonites
** †Titanambonites amplus
* †Tolypammina
* †Trematis
* †Trematospira
* †Trepospira
* Fossil of the Cambrian trilobite Tricrepicephalus †Tricrepicephalus
** †Tricrepicephalus walcotti
* †Trigonodictya
** †Trigonodictya irregularis
* †Trimerus
** †Trimerus delphinocephalus
* †Triplesia
** †Triplesia putillus
* †Trochonema
** †Trochonema bellulum
** †Trochonema eccentricum
** †Trochonema trochonemoides – type locality for species
** †Trochonema umbilicata
* †Trochonemella – tentative report
** †Trochonemella knoxvillensis – type locality for species
** †Trochonemella notablis – type locality for species
* †Trochophyllum
** †Trochophyllum verneuili
* †Trophocrinus
* †Twenhofelella
** †Twenhofelella bulbulus
* †Tyrridiocystis

## U

* 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
* †Ulrichocystis
** †Ulrichocystis eximia
* †Uncinulus
** †Uncinulus swaynensis
** †Uncinulus vellicatus
* †Undulabucania
** †Undulabucania punctifrons
* †Uperocrinus
** †Uperocrinus apheles
** †Uperocrinus nashvillae
** †Uperocrinus robustus

## V

* 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
* †Valcourea
** †Valcourea deflecta
* †Vanuxemia
** †Vanuxemia hayniana
* †Vermiporella

## W

* 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
* †Walliserodus
** †Walliserodus sancticlairi
* †Westonia
* †Whiteavesia
** †Whiteavesia saffordi
* †Whitfieldella
** †Whitfieldella nitida
* †Wurmiella
** †Wurmiella excavata

## X

* 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
* †Xyeleblastus
** †Xyeleblastus magnificus

## Z

* 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
* †Zittelella
** †Zittelella varians
* †Zophocrinus
* †Zygospira
** †Zygospira lebanonensis – type locality for species
** †Zygospira modesta
** †Zygospira saffordi