# List of the Paleozoic life of Kentucky

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

## A

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* †Abatocrinus
** †Abatocrinus grandis
** †Abatocrinus steropes
** †Abatocrinus n. sp. – informal
* Fossilized calyx of the Carboniferous crinoid ("sea lily") Abrotocrinus †Abrotocrinus
** †Abrotocrinus coreyi
** †Abrotocrinus debrae
** †Abrotocrinus manus – tentative report
** †Abrotocrinus springeri
** †Abrotocrinus unicus
* †Achatella
* †Achistrum
** †Achistrum brownwoodensis
** †Achistrum ludwigi
** †Achistrum monochordata
** †Achistrum nicholsoni
* †Acidaspis
* †Acidaspsis
* †Acinophyllum
** †Acinophyllum davisi
* †Aclisina
** †Aclisina golconda
* †Acolocrinus
** †Acolocrinus hydraulicus
* †Acratia
* † Acrophyllum
** †Acrophyllum clarki
** †Acrophyllum conigerum
* †Actinoceras
** †Actinoceras altopontense – type locality for species
** †Actinoceras kentuckiense – type locality for species
* Fossilized calyx and partial stem of the Devonian-Permian crinoid ("sea lily") Actinocrinites †Actinocrinites
** †Actinocrinites eximius
** †Actinocrinites gibsoni
** †Actinocrinites jugosus
** †Actinocrinites scitulus
* †Adinocrinus
** †Adinocrinus nodosus
* †Aerocortex
** †Aerocortex kentuckiensis
* †Agaricocrinus
** †Agaricocrinus americanus
** †Agaricocrinus crassus
** †Agaricocrinus inflatus – tentative report
** †Agaricocrinus planoconvexus
** †Agaricocrinus wortheni – tentative report
* †Agassizocrinus
** †Agassizocrinus conicus
** †Agassizocrinus gibbosua
** †Agassizocrinus laevis
** †Agassizocrinus lobatus
* †Ahrensisporites
** †Ahrensisporites guerickei
* †Alaskadiscus
** †Alaskadiscus magnus
** †Alaskadiscus subacutus
* †Alastega
** †Alastega martini – type locality for species
* Fossilized fronds of the Carboniferous-Early Cretaceous seed fern Alethopteris †Alethopteris
** †Alethopteris decurrens
** †Alethopteris lonchitica – or unidentified comparable form
* †Allonychia
** †Allonychia flanaganensis
* †Alloprosallocrinus
** †Alloprosallocrinus conicus
* †Allorisma
* †Allosaccus
* †Allumettoceras
** †Allumettoceras tenerum – or unidentified comparable form
* †Alveolites
** †Alveolites asperus
** †Alveolites constans
** †Alveolites expatiatus
** †Alveolites fibrosus
** †Alveolites goldfussi
** †Alveolites labrosus
** †Alveolites louisvillensis
** †Alveolites minimus
** †Alveolites mordax
** †Alveolites squamosus
** †Alveolites undosus
** †Alveolites winchellana
* †Amaurotoma
** †Amaurotoma leavenworthana
* †Amblytochiton
** †Amblytochiton incomptus – type locality for species
* †Ambochia
* †Ambonychia
** †Ambonychia byrnesi
** †Ambonychia ulrichi – or unidentified comparable form
* †Ammonellipsites
* †Amphiscapha
** †Amphiscapha catilloides
* †Amphissites
** †Amphissites centronotoides
** †Amphissites mimicus
** †Amphissites planoventralis
** †Amphissites vanniae
* †Amphoracrinus
* †Amplexizaphrentis
** †Amplexizaphrentis compressus
** †Amplexizaphrentis spinulosus
* Ordovician-Permian bryozoan Amplexopora †Amplexopora
** †Amplexopora minnesotensis
** †Amplexopora minor
** †Amplexopora persimilis
** †Amplexopora winchelli – or unidentified comparable form
* †Amplexus
** †Amplexus fragilis
* †Amygdalocystites
** †Amygdalocystites fiorealis
* †Anapiculatisporites
** †Anapiculatisporites minor
* †Anastrophia – tentative report
* †Anazyga
** †Anazyga recurvirostra
* †Anchiopella
** †Anchiopella anchiops
* †Anematina
** †Anematina proutana
* † Anisophyllum
** †Anisophyllum trifurcatum
** †Anisophyllum unilargum – tentative report
* †Ankyropteris
** †Ankyropteris brongniartii
* Fossil of the Carboniferous horsetail relative Annularia †Annularia
** †Annularia galioides
* †Anomalocrinus
* †Anomalodonta
** †Anomalodonta gigantea
* †Aorocrinus
** †Aorocrinus nodulus – type locality for species
* †Aparchites
** †Aparchites minutissimus
* †Apiculatasporites
** †Apiculatasporites variocorneus
* †Apodasmocrinus
** †Apodasmocrinus punctatus
* †Aptochilina
* †Arabellites
** †Arabellites cornutus
* †Arachnophyllum
** †Arachnophyllum mamillare
** †Arachnophyllum mammillare
** †Arachnophyllum pentagonum – type locality for species
** †Arachnophyllum quadrangulare
** †Arachnophyllum separatum
** †Arachnophyllum sinemurum – type locality for species
** †Arachnophyllum striatum
* Fossilized shell and spines of the Late Devonian-Permian sea urchin Archaeocidaris †Archaeocidaris
** †Archaeocidaris norwoodi
* †Archaeocrinus
** †Archaeocrinus peculiaris
* †Archaeopitys
** †Archaeopitys eastmanii
* †Archaeopteris
** †Archaeopteris eastmanii
* Fossils of the Carboniferous-Permian bryozoan Archimedes †Archimedes
** †Archimedes communis
** †Archimedes compactus
** †Archimedes confertus
** †Archimedes distans
** †Archimedes invaginatus
** †Archimedes lativolvis
** †Archimedes macfarlani
** †Archimedes meekanoides
** †Archimedes meekanus
** †Archimedes proutanus
** †Archimedes sublaxus
** †Archimedes swallowvanus
** †Archimedes terebriformis
* †Archinacella
** †Archinacella simulatrix
* †Arnoldella
** †Arnoldella minuta
* †Arthraria
** †Arthraria rogersensis
* †Arthropitys
** †Arthropitys communis
* †Arthroxylon
* †Asolanus
* †Aspidopora
** †Aspidopora newberryi
* †Astarella
* †Astartella – tentative report
** †Astartella concentrica
* Fossilized teeth of the Devonian-Cretaceous shark Asteracanthus †Asteracanthus
** †Asteracanthus siderius – type locality for species
* †Asterophyllites
** †Asterophyllites charaeformis
** †Asterophyllites longifolius
* †Asthenophyllum
** †Asthenophyllum davisi – type locality for species
** †Asthenophyllum scitulum – tentative report
* †Astrocerium
** †Astrocerium hisingeri
** †Astrocerium niagarense
** †Astrocerium venustum
* †Atactopora
* †Atactoporella
** †Atactoporella newportensis
* †Atelestocrinus
** †Atelestocrinus kentuckyensis – type locality for species
* †Athyris
** †Athyris fultonensis
* Fossilized shell of the Late Ordovician-Carboniferous brachiopod Atrypa †Atrypa
* †Augustoceras
** †Augustoceras shideleri – type locality for species
* †Aulacera
** †Aulacera cylindrica
** †Aulacera intermedia
** †Aulacera nodulifera
** †Aulacera plummeri
* †Aulocrinus
** †Aulocrinus bellus
* †Aulocystis
** †Aulocystis auloporoidea
** †Aulocystis jacksoni
** †Aulocystis procumbens – tentative report
** †Aulocystis transitorius – type locality for species
* Fossil of the Late Ordovician-Permian tabulate coral Aulopora †Aulopora
** †Aulopora precius
** †Aulopora pygmaea – tentative report
** †Aulopora tubiporoides
* †Australosutura
* †Aviculopecten
** †Aviculopecten germanus – or unidentified related form

## B

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* I
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* Bairdia
** †Bairdia salemensis
* †Balticopora
** †Balticopora tenuimurale
* †Barycrinus
** †Barycrinus asteriscus – or unidentified related form
** †Barycrinus cornutus
** †Barycrinus rhombiferus
** †Barycrinus sculptilis
** †Barycrinus sculptus
** †Barycrinus spurius
** †Barycrinus stellatus
** †Barycrinus tumidus
* †Batherocystis
** †Batherocystis appressa
* †Bathyurus
** †Bathyurus ingalli – or unidentified comparable form
* †Batocrinus
** †Batocrinus calyculus
** †Batocrinus icosodactylus
** †Batocrinus spergenensis
* †Batostoma
** †Batostoma humile – or unidentified comparable form
* †Batostomella
** †Batostomella gracilis
* †Beecheria
** †Beecheria formosa – tentative report
* †Belemnospongia
** †Belemnospongia parmula
* Fossilized shell of the Silurian-Early Triassic mollusc Bellerophon †Bellerophon
* †Beloitoceras
** †Beloitoceras huronense – or unidentified comparable form
* †Benthanyphyllum
** †Benthanyphyllum prateriforme
** †Benthanyphyllum robustum
* Berenicea
* †Beyrichia
** †Beyrichia chambersi
* †Beyrichoceras
* †Billingsastraea
** †Billingsastraea yandelli
* †Billingsocystis
** †Billingsocystis invaginata
* †Bisatoceras – tentative report
* †Blairocrinus
** †Blairocrinus protuberatus – type locality for species
* †Blothrocrinus
** †Blothrocrinus swallovi
* †Blothrophyllum
** †Blothrophyllum zaphrentiforme
* †Bolbopisthia
** †Bolbopisthia progressa reticulata – or unidentified comparable form
* †Bollia
** †Bollia persulcata
* †Borestus
* †Bostonia
** †Bostonia perplexa
* †Bothrodendron
** †Bothrodendron minutifolium
* †Bowmanites
** †Bowmanites dawsoni
* †Brachiospongia
** †Brachiospongia digitata
* †Brachymetopus
* †Brachythyris
** †Brachythyris subcardiformis
** †Brachythyris suborbicularis
* †Bucanapsis
* †Bucania
** †Bucania halli
** †Bucania pojetai – type locality for species
** †Bucania rugatina
** †Bucania subangulata
** †Bucania sublata
* †Bucanopsis
** †Bucanopsis carinifera
** †Bucanopsis diabloensis
* †Bulimorpha
** †Bulimorpha bulimiformis
** †Bulimorpha elongata
* Life restoration of the Early Ordovician-Silurian trilobite Bumastus †Bumastus
* †Byssonychia
** †Byssonychia radiata
** †Byssonychia richmondensis
* Bythocypris
** †Bythocypris cylindrica
** †Bythocypris lydeae

## C

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* Fossilized stems from the Carboniferous-Permian horsetail relative Calamites †Calamites
** †Calamites cistii
** †Calamites undulatus
* †Calamocarpon
** †Calamocarpon insignis
* †Calamopitys
** †Calamopitys americana
** †Calamopitys foerstei
* †Calamopteris
** †Calamopteris hippocrepis
* †Calamoptys
** †Calamoptys foerstei
* †Calamospora
** †Calamospora hartungiana
* †Calamostachys
** †Calamostachys binneyana
* †Calapoecia
** †Calapoecia huronensis
* A polished round of the permineralised Late Devonian-Carboniferous wood Callixylon †Callixylon
** †Callixylon brownii
* †Calopora
** †Calopora ramosa
* †Calostylis
** †Calostylis lindstroemi
** †Calostylis spongiosa
* †Calyptaulax
** †Calyptaulax strasburgensis – or unidentified comparable form
* †Camarotoechia
** †Camarotoechia mutata
* †Camerella
** †Camerella immatura – or unidentified related form
* Fossilized shell of the Middle Ordovician-Silurian nautiloid cephalopod Cameroceras †Cameroceras
** †Cameroceras rowenaense – type locality for species
** †Cameroceras trentonense – or unidentified comparable form
* †Camptocrinus
** †Camptocrinus crawfordsvillensis
** †Camptocrinus nudus
* †Canadocystis
** †Canadocystis tennesseensis
* †Cantabricanites – tentative report
** †Cantabricanites greenei
* †Carabocrinus
** †Carabocrinus micropunctatus
** †Carabocrinus plate – informal
* †Carinaropsis
** †Carinaropsis cymbula
** †Carinaropsis explanata – type locality for species
** †Carinaropsis minima
* †Cartersoceras
** †Cartersoceras popei – type locality for species
** †Cartersoceras shideleri
* †Catillocrinus
** †Catillocrinus tennesseeae
* †Cavellina
* †Ceramophylla
** †Ceramophylla alternatum
* †Ceramoporella
* †Cerartoleperditia
** †Cerartoleperditia kentuckyensis
* †Ceratopsis
** †Ceratopsis chambersi
** †Ceratopsis intemedia
** †Ceratopsis intermedia
** †Ceratopsis oculifera – or unidentified related form
* Fossil of the Middle-Late Ordovician trilobite Ceraurus †Ceraurus
* †Cestocrinus – tentative report
* †Chasmatopora
* †Cheirocystis
** †Cheirocystis fultonensis – type locality for species
* †Chonetes
* †Cincinnaticrinus
** †Cincinnaticrinus varibrachialis
* †Cincinnetina
** †Cincinnetina meeki
** †Cincinnetina multisecta
* †Cladochonus
** †Cladochonus beecheri
** †Cladochonus crassus
* †Cladopora
** †Cladopora aculeata
** †Cladopora acupicta
** †Cladopora bifura
** †Cladopora gulielmi
** †Cladopora imbricata
** †Cladopora menis – tentative report
** †Cladopora ordinata
** †Cladopora reticulata
* †Cladoxylon
* †Clathrospira
** †Clathrospira conica
** †Clathrospira subconica
* †Claudeonychia – tentative report
** †Claudeonychia byrnesi
* †Cleionychia
* Fossilized shell of the Middle Devonian-Permian brachiopod Cleiothyridina †Cleiothyridina
** †Cleiothyridina hirsuta
** †Cleiothyridina sublamellosa
* †Clepsydropsis
** †Clepsydropsis bertrandi
** †Clepsydropsis campbelli
** †Clepsydropsis chaneyi
** †Clepsydropsis titan
* †Climacograptus
** †Climacograptus putillus
* †Clinopistha
** †Clinopistha radiata
* †Codaster
** †Codaster jessieae
* †Coeliocrinus
** †Coeliocrinus subspinosus
* †Coenites
** †Coenites verticillatus
* †Colaptomena
* †Colpomya
** †Colpomya constricta
** †Colpomya faba
* Fossilized shell of the Late Devonian-Permian brachiopod Composita †Composita
** †Composita subquadrata
** †Composita trinuclea
* †Conostoma
** †Conostoma anglogermanicum
** †Conostoma oblongum
* †Constellaria
** †Constellaria florida – or unidentified comparable form
** †Constellaria teres
* †Conularia
** †Conularia formosa
** †Conularia trentonensis
* †Convolutispora
* †Coopericystis
** †Coopericystis pyriformis
* †Cordaites
** †Cordaites felicis
* Fossil of the Middle Ordovician-Carboniferous horn coral Cornulites †Cornulites
* †Coronocystis
** †Coronocystis angulatus
* †Cosmetocrinus
** †Cosmetocrinus gracilis
* †Costalocrinus
** †Costalocrinus conkini – type locality for species
** †Costalocrinus cornutus
** †Costalocrinus rex
* †Costatulites
** †Costatulites richmondensis
* †Crania – tentative report
* †Craniops
** †Craniops cincinnatiensis
* †Crassispora
** †Crassispora kosankei
* †Craterophyllum
** †Craterophyllum adnascens
** †Craterophyllum invaginatum
** †Craterophyllum solitarium
* †Cryptolithus
** †Cryptolithus bellulus
** †Cryptolithus recurvus
** †Cryptolithus tesselatus
* †Ctenobolbina
** †Ctenobolbina ciliata
* †Ctenodonta
** †Ctenodonta logani – or unidentified related form
** †Ctenodonta longa – or unidentified related form
** †Ctenodonta nasuta – or unidentified comparable form
** †Ctenodonta obliqua
** †Ctenodonta regia
** †Ctenodonta socialis
* †Cuffeyella
** †Cuffeyella arachnoidea
* †Culmicrinus
** †Culmicrinus verus
* †Cuneamya
* †Cupulocrinus
* †Cyathactis
** †Cyathactis sedentarius
** †Cyathactis typus
* †Cyathaxonia
** †Cyathaxonia venusta
* Fossilized calyx and partial stem of the Silurian-Permian crinoid ("sea lily") Cyathocrinites †Cyathocrinites
** †Cyathocrinites asperrimus
** †Cyathocrinites astralus – type locality for species
** †Cyathocrinites farleyi
** †Cyathocrinites glenni
** †Cyathocrinites iowensis
** †Cyathocrinites kelloggi
** †Cyathocrinites multibrachiatus
** †Cyathocrinites nodosus
** †Cyathocrinites parvibrachiatus
* †Cyathophylloides
* †Cybelinidae
** †Cybelinidae cranidium – informal
* †Cycloconcha
** †Cycloconcha milleri
** †Cycloconcha ovata – or unidentified related form
* †Cyclocyclopa
* †Cyclocystoides
* †Cyclogranisporites
** †Cyclogranisporites aureus – or unidentified comparable form
** †Cyclogranisporites minutus
* †Cyclonema
** †Cyclonema minuta
* †Cyclopentagonopa
* †Cyclora – tentative report
* †Cydrocrinus
** †Cydrocrinus concinnus – tentative report
** †Cydrocrinus subramulosus – tentative report
* †Cymatonota
* †Cyphaspis
* †Cyphotrypa
** †Cyphotrypa acervulosa
** †Cyphotrypa clarksvillensis
* †Cypricardinia
** †Cypricardinia indianensis
* †Cyrtina
* Restoration of the Cambrian-Middle Devonian nautiloid cephalopod Cyrtoceras †Cyrtoceras
* †Cyrtodonta
** †Cyrtodonta grandis
** †Cyrtodonta subovata
* †Cyrtodontula
** †Cyrtodontula umbonata
* †Cyrtolites
** †Cyrtolites claysferryensis – type locality for species
** †Cyrtolites inornatum
** †Cyrtolites ornatus – tentative report
** †Cyrtolites retrorsus
* †Cyrtospira
** †Cyrtospira bicurvata – type locality for species
* †Cyrtostropha
** †Cyrtostropha salteri
* †Cystihalysites
** †Cystihalysites nexus
* †Cystiphylloides
** †Cystiphylloides americanum
** †Cystiphylloides crassatum
* †Cystiphyllum
** †Cystiphyllum granilineatum
** †Cystiphyllum niagarense
** †Cystiphyllum spinulosum
* †Cystodictya
** †Cystodictya lineata
* Cytherella

## D

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* †Dalejina
* †Dalmanella
** †Dalmanella emacerata
** †Dalmanella fertilis
** †Dalmanella sulcata
* †Dalmanophyllum
** †Dalmanophyllum gainesi
** †Dalmanophyllum herzeri
** †Dalmanophyllum linguliferum
* Fossilized calyx of the Carboniferous crinoid ("sea lily") Decadocrinus †Decadocrinus
** †Decadocrinus scalaris
* †Deceptrix
** †Deceptrix hartsvillensis – or unidentified comparable form
** †Deceptrix perminuta
* †Declinognathodus
** †Declinognathodus delicatus – or unidentified related form
** †Declinognathodus donetzianus
** †Declinognathodus marginodosus
* †Decoroproetus
** †Decoroproetus parviusculus
* †Deiroceras
** †Deiroceras curdsvillense
* †Dekayia
* †Deliablastus
** †Deliablastus cumberlandensis
* †Deltoidospora
** †Deltoidospora priddyi
* †Densosporites
** †Densosporites annulatus
** †Densosporites glandulosus
** †Densosporites sphaerotriangularis
* †Dentiblastus
* †Diabolocrinus
** †Diabolocrinus vesperalis
* †Dichocrinus
** †Dichocrinus ficus – tentative report
** †Dichocrinus gracilis
** †Dichocrinus pocillum – tentative report
** †Dichocrinus simplex
** †Dichocrinus ulrichi
* †Dictyophlois
** †Dictyophlois reticulata
* †Dictyotomaria
** †Dictyotomaria nyi
* †Dictyotriletes
** †Dictyotriletes bireticulatus
* †Dielasma
** †Dielasma formosa
* †Diestoceras
** †Diestoceras indianense
* †Diichnia
** †Diichnia kentuckiensis
* †Dilobella
* †Dimegelasma
* †Dimorphoceratoides
** †Dimorphoceratoides adamsi – type locality for species
* †Dinophyllum
** †Dinophyllum hoskinsoni
** †Dinophyllum stokesi
* †Dinorthis
** †Dinorthis pectinella
* †Diorychopora
** †Diorychopora tenuis
* †Diploblastus
* Cambrian graptolite Diplograptus †Diplograptus
* †Disphyllum
** †Disphyllum synaptophylloides
* †Dizygocrinus
** †Dizygocrinus biturbinatus
** †Dizygocrinus montgomeryensis
** †Dizygocrinus whitei
* †Doleroides
* †Dolichoharpes
* †Donaldina
** †Donaldina zadoe
* †Dorycrinus
** †Dorycrinus gouldi
** †Dorycrinus quinquelobus
* †Drymopora
** †Drymopora fascicularis
* †Dzhaprakoceras
** †Dzhaprakoceras brodheadense – type locality for species

## E

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* †Ectenocrinus
** †Ectenocrinus simplex
* †Edaphophyllum
** †Edaphophyllum laciniatum – tentative report
* †Edmondia
* †Edrioaster
** †Edrioaster bigsbyi
** †Edrioaster priscus
* †Emmonsia
** †Emmonsia amplissima
** †Emmonsia arbuscula
** †Emmonsia bacula
** †Emmonsia convexa
** †Emmonsia emmonsi
** †Emmonsia epidermata
** †Emmonsia epidermi
** †Emmonsia eximia
** †Emmonsia radiciformis
** †Emmonsia ramosa
** †Emmonsia tuberosa
* Fossilized shells and restored appearances of the Middle-Late Ordovician nautiloid cephalopod Endoceras †Endoceras
** †Endoceras proteiformis
* †Endothyra
** †Endothyra baileyi
* †Endothyranella
** †Endothyranella inflata
** †Endothyranella kentuckyensis
* †Enoploura
** †Enoploura punctata – or unidentified comparable form
* †Entelophyllum
** †Entelophyllum eruciforme
** †Entelophyllum rugosum
** †Entelophyllum strictum
* Eocaudina
** †Eocaudina gutschicki
** †Eocaudina mccormacki
* †Eochonetes
** †Eochonetes clarksvillensis
* †Eoleperditia
** †Eoleperditia catheysensis – or unidentified comparable form
** †Eoleperditia fabulites
* †Eolissochonetes
** †Eolissochonetes morsei
* †Eopteria
** †Eopteria conocardiformis
* †Eospirifer
* †Eotomaria
* †Ephippioceras
** †Ephippioceras ferratum
* A living Equisetum, or horsetail †Equisetum
** †Equisetum arvense
* †Eratacrinus
** †Eratacrinus coxanus
* †Eremopteris
** †Eremopteris gracilis
* †Eretmocrinus
** †Eretmocrinus cloelia
** †Eretmocrinus magnificus
** †Eretmocrinus ramulosus
** †Eretmocrinus yandelli
* †Eridophyllum
** †Eridophyllum archiaci
** †Eridophyllum coagulatum
** †Eridophyllum seriale
** †Eridophyllum tumidulum
* †Eridopora
* †Eridorthis
** †Eridorthis nicklesi
* †Eridotrypa
** †Eridotrypa briareus – or unidentified comparable form
** †Eridotrypa mutabilis
* †Escharopora
** †Escharopora falciformis
** †Escharopora hilli
** †Escharopora nodulosa – or unidentified comparable form
* †Etheridgella
** †Etheridgella biconvexa – type locality for species
* †Eucladocrinus
** †Eucladocrinus millebrachiatus
* †Euconospira
** †Euconospira conula
* †Eumetria
** †Eumetria marcyi
** †Eumetria vera
** †Eumetria verneuiliana
** †Eumetria verneuliana
* †Eunema
** †Eunema centralis
** †Eunema helicteres
* †Eunicites
* †Eupachycrinus
** †Eupachycrinus germanus
** †Eupachycrinus spartarius
* †Euphemites
** †Euphemites randolphensis
* †Euryocrinus
** †Euryocrinus tennesseensis

## F

* 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
* †Favistella
** †Favistella alveolata
* †Favistina
** †Favistina stellata
* Fossil of the Late Ordovician-Permian tabulate coral Favosites †Favosites
** †Favosites arbor
** †Favosites biloculi
** †Favosites clausus
** †Favosites delandi
** †Favosites densitabulatus
** †Favosites discoideus
** †Favosites discus
** †Favosites divergens
** †Favosites favosus
** †Favosites hamiltoniae
** †Favosites hisingeri
** †Favosites niagarensis
** †Favosites placenta
** †Favosites proximatus
** †Favosites quercus
** †Favosites rotundituba
** †Favosites turbinatus
* †Fenestella
** †Fenestella multispinosa
** †Fenestella rudis
** †Fenestella serratula
* †Fimbrispirifer
** †Fimbrispirifer venustus
* †Fistulipora
** †Fistulipora incrustans
** †Fistulipora perdensa
** †Fistulipora spergenensis
* Front (left) and right side (right) views of an enrolled fossil of the Middle Ordovician-Silurian trilobite Flexicalymene †Flexicalymene
** †Flexicalymene granulosa
** †Flexicalymene griphus
** †Flexicalymene meeki
* †Florinites
** †Florinites mediapudens
* †Foerstephyllum
** †Foerstephyllum vacuum
* †Foerstia
** †Foerstia ohioensis
* †Follotites
** †Follotites bighillensis – type locality for species
* Fossilized calyx of the Devonian-Carboniferous crinoid ("sea lily") Forbesiocrinus †Forbesiocrinus
** †Forbesiocrinus multibrachiatus
** †Forbesiocrinus wortheni
** †Forbesiocrinus wortheri
* †Furcitella
** †Furcitella scofieldi – or unidentified comparable form
* †Fusispira
** †Fusispira sulcata

## G

* 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
* †Galtiera
** †Galtiera bostonensis
* †Gastrioceras
** †Gastrioceras magoffinense – type locality for species
* †Gaulocrinus
** †Gaulocrinus bordeni
** †Gaulocrinus symmetros – type locality for species
** †Gaulocrinus trantscholdi
** †Gaulocrinus veryi
* †Geniculograptus
** †Geniculograptus typicalis
* Fossilized calyx and partial stem of the Devonian-Carboniferous crinoid ("sea lily") Gilbertsocrinus †Gilbertsocrinus
** †Gilbertsocrinus tuberculosus – tentative report
** †Gilbertsocrinus tuberosus
** †Gilbertsocrinus typus – tentative report
* †Girtyella
** †Girtyella brevilobata
** †Girtyella turgida
* †Glabrocingulum
** †Glabrocingulum ellenae – type locality for species
* †Globozyga
** †Globozyga littonana
* †Globulocystites
* †Glossina
** †Glossina nebraskensis
* Assemblage of fossils of the Middle Ordovician-Silurian crinoid ("sea lily") Glyptocrinus †Glyptocrinus
** †Glyptocrinus nodosus
* †Glyptopleura
** †Glyptopleura parvacostata
** †Glyptopleura perbella
* †Glyptopora
** †Glyptopora sagenella
* †Glyptorthis
** †Glyptorthis insculpta
* †Gnathodus
** †Gnathodus bulbosus
** †Gnathodus pseudosemiglaber
** †Gnathodus semiglaber
** †Gnathodus texanus
* Fossilized shell of the Late Devonian-Late Triassic ammonoid cephalopod Goniatites †Goniatites
* †Goniocyclus
* †Gorbyoceras
** †Gorbyoceras tetreauense – or unidentified comparable form
* †Gordonaster
** †Gordonaster brassfieldensis
* †Gosseletina
** †Gosseletina johnsoni
** †Gosseletina subglobosa
* †Grammysia – tentative report
* †Granasporites
** †Granasporites medius
* †Granatocrinus
** †Granatocrinus granulatus
* †Granulatisporites
** †Granulatisporites granularis
** †Granulatisporites granulatus
** †Granulatisporites pallidus
** †Granulatisporites verrucosus
* †Graptodictya
* †Gravicalymene
** †Gravicalymene hagani
* †Grewingikia
** †Grewingikia rustica
* Multiple views of a fossil of the Ordovician horn coral Grewingkia †Grewingkia
** †Grewingkia rusticum
* †Grumosisporites
** †Grumosisporites varioreticulatus
* †Gyronema
** †Gyronema pulchellum

## H

* 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
* †Hadroblastus
* †Hallia
** †Hallia strigata – tentative report
* Fossil of the Ordovician bryozoan ("moss animal") Hallopora Close-up photograph of a fossil of the Ordovician bryozoan ("moss animal") Hallopora †Hallopora
** †Hallopora multitabulata
** †Hallopora onealli
* †Halysiocrinus
** †Halysiocrinus cumberlandensis
** †Halysiocrinus dactylus
** †Halysiocrinus tunicatus
* Fossil of the Ordovician-Silurian tabulate coral Halysites †Halysites
** †Halysites louisvillensis – type locality for species
** †Halysites meandrinus – tentative report
** †Halysites nitidus
* †Haplistion
** †Haplistion armstrongi
* †Hapsiphyllum
** †Hapsiphyllum cassedayi
** †Hapsiphyllum cassedeyi
* †Hebertella
** †Hebertella alveolata
** †Hebertella frankfortensis
** †Hebertella occidentalis
** †Hebertella parkensis
** †Hebertella parksensis
** †Hebertella sinuata
* †Helicelasma
** †Helicelasma rusticum
* †Helicotoma
** †Helicotoma planulatoides – type locality for species
* †Heliolites
** †Heliolites megastoma
** †Heliolites romingeri
** †Heliolites spongiosus
** †Heliolites spongodes
** †Heliolites subtubulatus
* Fossil of the Middle Devonian horn coral Heliophyllum †Heliophyllum
** †Heliophyllum alternatum
** †Heliophyllum ethelanum
** †Heliophyllum gurleyi
** †Heliophyllum halli
** †Heliophyllum infundibulum
** †Heliophyllum insigne
** †Heliophyllum tenuiseptatum
* †Helminthochiton
** †Helminthochiton blacki
* †Hemiphragma
** †Hemiphragma tenuimurale – or unidentified comparable form
* †Hemitrypa
* †Hesperorthis
** †Hesperorthis tricenaria
* †Heterophrentis
** †Heterophrentis concava
** †Heterophrentis foliata
** †Heterophrentis simplex
** †Heterophrentis subcompressa
* †Heterorthina
** †Heterorthina macfarlani
* †Heterotrypa
** †Heterotrypa frondosa – or unidentified comparable form
** †Heterotrypa trentonensis
* †Hierogramma
** †Hierogramma jeffreyi
* †Hindia
** †Hindia parva
* †Hippocardia
* †Hiscobeccus
** †Hiscobeccus capax
* †Histocrinus
** †Histocrinus coreyi
** †Histocrinus stellatus – tentative report
* †Hoareicardia
** †Hoareicardia cunea
* †Holcocrinus
** †Holcocrinus nodobrachiatus
** †Holcocrinus spinobrachiatus
* Fossilized shells of the Ordovician-Carboniferous sea snail Holopea †Holopea
** †Holopea insignis
** †Holopea parvula – or unidentified comparable form
* †Holtedahlina
** †Holtedahlina sulcata
* †Homaloneura – type locality for genus
** †Homaloneura redbirdi – type locality for species
* †Homotelus
* †Homotrypa
** †Homotrypa callosa
** †Homotrypa similis
* †Hormotoma
** †Hormotoma gracilis
* †Hudsonospongia
* †Hustedia
** †Hustedia miseri – or unidentified comparable form
** †Hustedia mormoni – or unidentified comparable form
* †Hybocrinus
** †Hybocrinus tumidus
* †Hybocystites
** †Hybocystites problematicus
* †Hylodecrinus
** †Hylodecrinus asper
** †Hylodecrinus bonoensis
** †Hylodecrinus briareus – tentative report
** †Hylodecrinus sculptus
†Hyolithes
** †Hyolithes parviuscula
* †Hypergonia
** †Hypergonia marvinwelleri
* †Hypselocrinus
** †Hypselocrinus campanulus
** †Hypselocrinus hoveyi

## I

* 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
* †Ianthinopsis
** †Ianthinopsis medialis
* †Idiognathoides
** †Idiognathoides ouachitensis
** †Idiognathoides sinuatus
** †Idiognathoides tuberculatus
* †Imitoceras
* Fossil of the Ordovician crinoid ("sea lily") Iocrinus †Iocrinus
* †Ischyrodonta
** †Ischyrodonta elongata – tentative report
** †Ischyrodonta modioliformis
* †Isochilina
** †Isochilina ampla – or unidentified comparable form
* †Isorophus
** †Isorophus cincinnatiensis
* †Isorthoceras
** †Isorthoceras albersi – type locality for species
* Fossil of the Middle-Late Ordovician giant trilobite Isotelus. †Isotelus
** †Isotelus gigas
** †Isotelus maximus

## J

* 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
* †Jonesella
** †Jonesella crepidiformis
** †Jonesella obscura – or unidentified related form

## K

* 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
* †Kalymma
** †Kalymma auriculata
** †Kalymma grandis
** †Kalymma hippocrepis
** †Kalymma lirata
** †Kalymma minuta
** †Kalymma resinosa
* †Kaskia
** †Kaskia chesterensis
* †Kazakhstania
** †Kazakhstania colubrella
** †Kazakhstania mangeri
* †Ketophyllum
** †Ketophyllum intertrium
* †Kinkaidia – type locality for genus
** †Kinkaidia cancellata – type locality for species
* †Kirkbya
* †Kodonophyllum
** †Kodonophyllum vadum
* †Krausella

## 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
* †Labechia
** †Labechia huronensis
* †Laccoprimitia
** †Laccoprimitia centralis
* †Lambeophyllum – tentative report
* †Lamprophyllum
** †Lamprophyllum niagarense
* †Lanecrinus
** †Lanecrinus depressus
** †Lanecrinus repertus
* †Lanthanaster
** †Lanthanaster intermedius
* †Laphamoceras
** †Laphamoceras scofieldi – or unidentified comparable form
* †Lecocrinus
** †Lecocrinus springeri
* †Lekocrinus
** †Lekocrinus planibrachiatus
* †Leperditella
** †Leperditella glabra
* †Leperditia
** †Leperditia caecigena
* †Lepidocoleus
* Restoration of the Carboniferous-Late Triassic club moss relative Lepidodendron. Eli Heimans (1911). †Lepidodendron
** †Lepidodendron aculeatum – or unidentified comparable form
** †Lepidodendron baylense
** †Lepidodendron boylensis
** †Lepidodendron noralbaniense
** †Lepidodendron volkmannianum
* †Lepidophylloides
** †Lepidophylloides longifolium
* †Lepidostrobophyllum
** †Lepidostrobophyllum lanceolatum
* †Lepidostrobus
** †Lepidostrobus fisheri
** †Lepidostrobus kentuckiensis
** †Lepidostrobus ornatus – tentative report
** †Lepidostrobus shopfii – type locality for species
* †Leptaena
** †Leptaena gibbosa
** †Leptaena kentuckiana – type locality for species
** †Leptaena richmondensis
* †Levizygopleura
** †Levizygopleura inornata
* Illustration of a fossilized shell of the Cambrian-Late Ordovician brachiopod Lingulella †Lingulella
* †Linoproductus
** †Linoproductus cora
* †Liospira
** †Liospira decipens
** †Liospira micula
** †Liospira progne
** †Liospira vitruvia
* †Liroceras
* †Listrochiton – type locality for genus
** †Listrochiton weiri – type locality for species
* Lithophaga – tentative report
* †Litostrobus
** †Litostrobus iowensis – or unidentified comparable form
* †Lophophyllidium
** †Lophophyllidium proliferum
* †Lophospira
** †Lophospira abnormis
** †Lophospira decursa – or unidentified comparable form
** †Lophospira milleri
** †Lophospira obliqua
** †Lophospira perangulata
** †Lophospira type locality for species A – informal
* †Lophotriletes
** †Lophotriletes gibbosus
* †Loxobucania
** †Loxobucania lindsleyi – type locality for species
** †Loxobucania nashvillensis
** †Loxobucania singularis – type locality for species
* †Loxonema
** †Loxonema nitida
* †Loxoplocus
* †Lycopogenia
** †Lycopogenia callicyrta
* †Lycospora
** †Lycospora granulata
** †Lycospora micropapillata
** †Lycospora pellucida
** †Lycospora pusilla
** †Lycospora rotunda
** †Lycospora subjuga
* †Lyrodesma
** †Lyrodesma acuminatum – or unidentified comparable form
** †Lyrodesma inornatum – tentative report

## 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
* †Maclurites
* †Macrocrinus
** †Macrocrinus konincki
** †Macrocrinus mundulus
** †Macrocrinus verneuillianus
* †Macurdablastus
** †Macurdablastus uniplicatus
* †Maelonoceras
** †Maelonoceras praematurum – or unidentified comparable form
* †Magnuscrinus
** †Magnuscrinus kammeri
** †Magnuscrinus praegravis
* †Marginatia
* †Marginicinctus
* †Marginifera
* †Mariopteris
** †Mariopteris nervosa
* †Masonoceras – type locality for genus
** †Masonoceras kentuckiense – type locality for species
* †Maximites
** †Maximites nassichuki – type locality for species
* †Meekopora
** †Meekopora eximia
* †Meekospira
** †Meekospira evansvillensis
** †Meekospira minuta
** †Meekospira mississippiensis
** †Meekospira peracuta
* †Megalaspidae – tentative report
** †Megalaspidae pygidium – informal
* †Megalomphala
** †Megalomphala crassa
* †Meniscocrinus
* Illustration (lower right, entry 15) of a fossilized shell in front and side views of the Silurian-Late Devonian brachiopod Meristella †Meristella
** †Meristella nasuta
* †Meristina – tentative report
* †Meristoschisma
** †Meristoschisma hudsoni
* †Merocanites
* †Merocrinus
* †Mesocyridira
** †Mesocyridira flagrocosta
** †Mesocyridira washingtonensis
* †Mesopalaeaster
** †Mesopalaeaster finei
* †Mesopilocrinus – tentative report
** †Mesopilocrinus romingeri
* †Mesotrypa
* †Mespilocrinus
** †Mespilocrinus kentuckyensis – type locality for species
** †Mespilocrinus myllos
** †Mespilocrinus romingeri
* †Metablastus
** †Metablastus bipyramidalis
** †Metablastus wortheni
* †Metacromyocrinus
** †Metacromyocrinus oklahomenisis
* †Metichthyocrinus
** †Metichthyocrinus clarkensis
** †Metichthyocrinus tiaraeformis
* †Michelinia
* †Michelinoceras
* †Micnoceras – or unidentified comparable form
* †Microceras – tentative report
* †Micromphalus – type locality for genus
** †Micromphalus turris – type locality for species
* †Micropileus
** †Micropileus variabilis
* †Microzygia
** †Microzygia lacunosa
* †Milleratia
** †Milleratia shideleri – or unidentified related form
* †Mimella
* †Mitrospermum
** †Mitrospermum compressum
* †Modiolodon
** †Modiolodon oviformis
* †Modiolopsis
** †Modiolopsis modiolaris
* †Monomuchites
** †Monomuchites annularis – type locality for species
** †Monomuchites costalis – or unidentified comparable form
** †Monomuchites obliquum – type locality for species
* †Monticulipora
* †Mourlonia
* †Muensteroceras
** †Muensteroceras oweni
* †Murchisonia
* †Murinella – tentative report
* †Murrayoceras
** †Murrayoceras murrayi – or unidentified comparable form

## 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
* †Nannillaneus
* †Neoicoceras
** †Neoicoceras elkhornense – type locality for species
* Fossilized shell of the Carboniferous-Permian brachiopod Neospirifer †Neospirifer
** †Neospirifer cameratus
* †Neozaphrentis
* †Neuropteris
** †Neuropteris gigantea
** †Neuropteris heterophylla
** †Neuropteris tenuifolia – or unidentified comparable form
* †Nipterocrinus
** †Nipterocrinus monroensis
* †Nucleospira – tentative report
* Nuculana
** †Nuculana belliostriata
* †Nucularca
** †Nucularca cingulata
** †Nucularca pectunculoides – or unidentified related form
* †Nuculites
** †Nuculites fabula
* †Nuculopsis
** †Nuculopsis girtyi
** †Nuculopsis subrotunda
* †Nyctopora – tentative report

## 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
* †Octonaria
** †Octonaria bicava
* †Odontophyllum
** †Odontophyllum convergens
** †Odontophyllum patellatum
** †Odontophyllum tornatum
* †Oepikina
** †Oepikina minnesotensis
* †Oliganisus
* †Oncoceras
** †Oncoceras major – type locality for species
** †Oncoceras multicameratum
* †Onniella
* Fossil of the Carboniferous crinoid ("sea lily") Onychocrinus †Onychocrinus
** †Onychocrinus grandis – type locality for species
** †Onychocrinus pulaskiensis
* †Orbiculoidea
** †Orbiculoidea convexa
** †Orbiculoidea manhattensis
* †Orbitremites
** †Orbitremites coralridgensis – type locality for species
** †Orbitremites kentuckyensis – type locality for species
** †Orbitremites oppelti
* †Ordogeisonoceras
** †Ordogeisonoceras amplicameratum – type locality for species
* †Ormoceras
** †Ormoceras ferecentricum – type locality for species
* †Orthis
** †Orthis testudinaria
* †Orthoceras
* †Orthodesma
* †Orthonybyoceras
* †Orthonychia
** †Orthonychia chesterense
* †Orthorhynchula
** †Orthorhynchula linneyi
** †Orthorhynchula sublinneyi
* †Orthotetes
* †Ovatia

## 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
* †Pachydictya
* †Pachyglossella
* †Pachylocrinus
** †Pachylocrinus aequalis
* †Palaeacis
** †Palaeacis cuniformis
* †Palaeocapulus
** †Palaeocapulus acutirostre
* †Palaeocaudina
** †Palaeocaudina kansasensis
* †Palaeoconcha
** †Palaeoconcha obliqua
* †Palaeocrinus
** †Palaeocrinus avondalensis
** †Palaeocrinus planobasalis
* †Palaeoneila
* †Palaeoneilo
** †Palaeoneilo socialis
* †Palaeopteria
** †Palaeopteria parvula – or unidentified related form
* †Palaeostylus – tentative report
* †Palaeozygopleura
** †Palaeozygopleura delphicola
* †Paleofavosites
** †Paleofavosites prolificus
* †Paracyrtolites
** †Paracyrtolites parvus – type locality for species
** †Paracyrtolites subplanus
* †Paradichocrinus
** †Paradichocrinus liratus
** †Paradichocrinus planus
** †Paradichocrinus polydactylus
** †Paradichocrinus ramus
** †Paradichocrinus sculptus
* †Paragassizocrinus
** †Paragassizocrinus disculus – or unidentified comparable form
** †Paragassizocrinus kendrickensis
** †Paragassizocrinus turris – or unidentified comparable form
* †Paraliospira – tentative report
** †Paraliospira mundula – type locality for species
* †Paraparchites
** †Paraparchites subcircularis
* †Parascytalocrinus
** †Parascytalocrinus hamiltonensis
** †Parascytalocrinus pentagonus
* †Parisocrinus – tentative report
* †Parvohallopora
** †Parvohallopora onealli
** †Parvohallopora ramosa
* †Patellilabia
** †Patellilabia chesterensis
* †Patellostium
* †Pattersonia
** †Pattersonia aurita
** †Pattersonia tuberosa
* †Paupospira
** †Paupospira bowdeni
** †Paupospira burginensis
** †Paupospira oweni
** †Paupospira sumnerensis
** †Paupospira tenuistriata
** †Paupospira tropidophora
* †Pecopteris
** †Pecopteris plumosa – or unidentified comparable form
* †Pelecocrinus
** †Pelecocrinus type locality for species – informal
* †Pellecrinus
** †Pellecrinus obuncus
* †Pentagonia
** †Pentagonia biplicata
* †Pentamerus
* Fossilized theca of the Carboniferous blastoid echinoderm ("sea bud") Pentremites †Pentremites
** †Pentremites abruptus
** †Pentremites clavatus
** †Pentremites conoideus
** †Pentremites elegans
** †Pentremites girtyi
** †Pentremites godoni
** †Pentremites halli
** †Pentremites okawensis
** †Pentremites platybasis
** †Pentremites princetonensis – or unidentified comparable form
** †Pentremites pyramidatus
** †Pentremites pyriformis
** †Pentremites spicatus
** †Pentremites springeri
** †Pentremites symmetricus
** †Pentremites tulipaformis
** †Pentremites tulipiaformis
** †Pentremites welleri
* †Perditocardinia
** †Perditocardinia dubia
* †Periastron
** †Periastron perforatum
** †Periastron reticulatum
** †Periastron reticulum
* †Pericyclus
* †Peripristis
** †Peripristis semicircularis
* †Permophorus
* †Peronopora
** †Peronopora decipiens – or unidentified comparable form
** †Peronopora granulifera – or unidentified comparable form
** †Peronopora milleri
* †Petrocrania
** †Petrocrania scabiosa
* †Petropegia
** †Petropegia radiata – type locality for species
** †Petropegia spinosa – type locality for species
* †Phaneroceras
** †Phaneroceras chesnuti – type locality for species
* †Phanocrinus
** †Phanocrinus parvaramus
* †Phestia
** †Phestia prolongata
* †Phillibole
* †Phillipsia
** †Phillipsia bufo
* †Phragmolites
** †Phragmolites bellulus – type locality for species
** †Phragmolites compressus – type locality for species
* †Phymatophyllum
** †Phymatophyllum nanum
* †Phytokneme
** †Phytokneme rhodona
* †Pietzschia
** †Pietzschia polyupsilon
* †Pionodema
** †Pionodema rectimarginata
* †Pionomena
** †Pionomena recens
* †Pithodea
** †Pithodea americana
* †Pitys
** †Pitys brownii
* Fossilized shell of the Ordovician brachiopod Plaesiomys †Plaesiomys
** †Plaesiomys subquadrata
** †Plaesiomys subquatra
* †Planalvus
** †Planalvus densa
* †Planisporites
** †Planisporites granifer
* †Planoendothyra
** †Planoendothyra whitesidei – or unidentified comparable form
* †Plasmopora
** †Plasmopora elegans
** †Plasmopora follis
* †Platyaxum
** †Platyaxum foliatum
** †Platyaxum frondosum
** †Platyaxum orthosoleniskum
** †Platyaxum undosum
* †Platyceras
* Three fossilized calyces of the Devonian-Permian crinoid ("sea lily") Platycrinites †Platycrinites
** †Platycrinites bonoensis
** †Platycrinites georgii
** †Platycrinites glyptus
** †Platycrinites hemisphaericus
** †Platycrinites hemisphericus – tentative report
** †Platycrinites planus
** †Platycrinites sculptus
** †Platycrinites spinifer
* †Platylichas
** †Platylichas halli
* Fossilized shell of the Middle Ordovician-Silurian brachiopod Platystrophia †Platystrophia
** †Platystrophia acutilirata
** †Platystrophia amoena
** †Platystrophia annieana
** †Platystrophia auburnensis
** †Platystrophia clarkesvillensis
** †Platystrophia clarksvillensis
** †Platystrophia colbiensis
** †Platystrophia crassa
** †Platystrophia cypha
** †Platystrophia elegantula
** †Platystrophia hopensis
** †Platystrophia laticosta
** †Platystrophia ponderosa
** †Platystrophia sublaticosta
* †Plectambonites
** †Plectambonites plicatellus
* †Plectocamara
* †Plectoceras
** †Plectoceras carletonense – or unidentified comparable form
* †Plectorthis
** †Plectorthis aequivalvis
** †Plectorthis fissicosta
** †Plectorthis plicatella
* †Plectospira
* Fossil of the Silurian-Carboniferous tabulate coral Pleurodictyum †Pleurodictyum
** †Pleurodictyum cylindricum
** †Pleurodictyum insigne
** †Pleurodictyum louisvillensis
** †Pleurodictyum maximum
** †Pleurodictyum planum
** †Pleurodictyum wardi
* Pleurotomaria
* †Plicodendrocrinus
** †Plicodendrocrinus casei
* †Plicorachis
** †Plicorachis danvillensis
* †Pojetaconcha
** †Pojetaconcha cressmani
* †Pojetoceras – type locality for genus
** †Pojetoceras floweri – type locality for species
* †Polaricyclus
** †Polaricyclus ballardensis
** †Polaricyclus bordenensis – type locality for species
** †Polaricyclus conkini – type locality for species
* †Polygnathus
** †Polygnathus communis
* †Polygrammoceras
* †Polypora
** †Polypora simulatrix
* †Portlockiella – type locality for genus
** †Portlockiella kentuckyensis – type locality for species
* †Poteriocrinites
** †Poteriocrinites horowitzi
* †Prasopora
** †Prasopora falesi
** †Prasopora hospitalis
** †Prasopora simulatrix
* †Primaspis
* †Prismopora
** †Prismopora serrulata
* †Productus
** †Productus cestriensis
* Restoration of the Silurian trilobite Proetus †Proetus
* †Prolecanites
** †Prolecanites lyoni
* †Propora
** †Propora eminula
** †Propora glabra
** †Propora papillata
** †Propora puella
* †Protaraea
** †Protaraea richmondensis
* †Proteoceras
** †Proteoceras tyronensis – type locality for species
* †Protocyathactis
** †Protocyathactis cybaeus – or unidentified comparable form
* †Protosalvinia
** †Protosalvinia arnoldii
** †Protosalvinia furcata
** †Protosalvinia rarenna
** †Protosalvinia ravenna
* Restoration based on the "Schunnemunk tree" fossil of the Silurian-Late Devonian tree-like probable fungus Prototaxites †Prototaxites
** †Prototaxites ortoni
* †Protozyga – tentative report
* †Pseudobigalea
** †Pseudobigalea crista
* †Pseudoconocardium
* †Pseudolingula
* †Pseudomulceodens
** †Pseudomulceodens cancellatus
* †Pseudopolygnathus
** †Pseudopolygnathus multistriatus
* †Pseudorthoceras
** †Pseudorthoceras knoxense
* †Pseudozygopleura
** †Pseudozygopleura deloi – or unidentified comparable form
** †Pseudozygopleura lanceolatus
** †Pseudozygopleura macra – or unidentified comparable form
** †Pseudozygopleura scitula
** †Pseudozygopleura semicostata
* †Pterinea
** †Pterinea demissa
* †Pterotheca
** †Pterotheca angusta
** †Pterotheca expansa
* †Pterotocrinus
** †Pterotocrinus acutus
** †Pterotocrinus armatus
** †Pterotocrinus bifurcatus
** †Pterotocrinus capitalis
** †Pterotocrinus depressus
** †Pterotocrinus lingulaformis
** †Pterotocrinus spatulatus
* †Ptychocrinus
* †Punctatisporites
** †Punctatisporites irrasus
** †Punctatisporites minutus
* †Punctospirifer
** †Punctospirifer transversus
* †Pustulatisporites
** †Pustulatisporites crenatus
* †Pycnactis
** †Pycnactis tenuiseptatus

## 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
* †Quepora
** †Quepora huronensis
** †Quepora louisvillensis – type locality for species

## 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 ponderosa
** †Rafinesquina trentonensis
** †Rafinesquina winchesterensis
* †Raistrickia
** †Raistrickia breveminens
** †Raistrickia crocea
* †Raphistoma
* †Raphistomina
** †Raphistomina lapicida
* †Rectifenestella
** †Rectifenestella tenax
* †Reinschospora
** †Reinschospora triangularis
* †Renisporites
** †Renisporites confossus
* †Resserella
* †Reticulariina
** †Reticulariina salemensis
** †Reticulariina spinosa
* †Reticulatisporites
** †Reticulatisporites muricatus
* †Retispira
** †Retispira ornatus
* †Rhabdocyclus
** †Rhabdocyclus scutellus
* †Rhegmaphyllum
** †Rhegmaphyllum daytonensis
* †Rhineoderma
** †Rhineoderma wortheni
* †Rhinidictya
* †Rhipidomella
** †Rhipidomella dubia
* †Rhizophyllum
** †Rhizophyllum attenuatum
** †Rhizophyllum corniculum
* †Rhodocrinites
** †Rhodocrinites barrisi
* †Rhombopora
** †Rhombopora incrassata
* †Rhombotrypa
** †Rhombotrypa quadrata
* †Rhynchopora
** †Rhynchopora beecheri
* †Rhynchotrema
** †Rhynchotrema dentatum
** †Rhynchotrema increbescens
** †Rhynchotrema kentuckiensis
* †Rhytiodentalium
** †Rhytiodentalium kentuckyensis
* †Rhytiophora
* †Romingerella
** †Romingerella major
* †Romingeria
** †Romingeria cummunata
** †Romingeria umbellifera
** †Romingeria vannula
* Rostricellula
** †Rostricellula minuta
* †Ruedemannia
** †Ruedemannia lirata
* †Rugomena
** †Rugomena vetusta
* †Rugosochonetes

## 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
* †Saffordophyllum
** †Saffordophyllum floweri
* †Salpingostoma
** †Salpingostoma kentuckyense
* †Salterospira
** †Salterospira chesterensis
* †Sarocrinus
** †Sarocrinus varsoviensis
* †Savagellites – tentative report
** †Savagellites lindahli
* †Savitrisporites
** †Savitrisporites nux
* †Scalites
** †Scalites peracutum
* †Scenophyllum
** †Scenophyllum coniferum – tentative report
* †Schizocrania
* †Schizodus
* †Schizophaulactis
** †Schizophaulactis densiseptatus
* †Schlotheimophyllum
** †Schlotheimophyllum fulcratum
** †Schlotheimophyllum ipomaea
* †Schuchertella
** †Schuchertella costatula
** †Schuchertella minuta
* Fossilized calyx of the Carboniferous crinoid ("sea lily") Scytalocrinus †Scytalocrinus
** †Scytalocrinus decadactylus
** †Scytalocrinus robustus
* †Seminula
** †Seminula subtilita
* †Septimyalina
* †Setigerites
** †Setigerites setiger
* †Sevillea
** †Sevillea trinucleata – or unidentified related form
* †Siderella
** †Siderella scotti
* †Similodonta
** †Similodonta hermitagensis – or unidentified related form
* †Sinuites
** †Sinuites cancellatus
** †Sinuites globularis
** †Sinuites granistriatus
** †Sinuites obesa
** †Sinuites pervoluta
** †Sinuites planodorsatus – type locality for species
* †Sinuitina
* †Sinuspores
** †Sinuspores sinuatus
* †Siphonophrentis
** †Siphonophrentis halli
* †Soleniscus
** †Soleniscus gracilis
** †Soleniscus texanus
* Fossils of the red alga Solenopora †Solenopora
* †Sowerbyella
** †Sowerbyella curdsvillensis
** †Sowerbyella grierensis – type locality for species
** †Sowerbyella rugosa
* †Sowerbyites
* †Spackmanites
** †Spackmanites habibii
* †Sphenophyllum
** †Sphenophyllum cuneifolium
* Fossilized foliage of the Late-Devonian-Cretaceous seed fern Sphenopteris †Sphenopteris
** †Sphenopteris amoena
** †Sphenopteris obtusiloba
* †Sphenosphaera
** †Sphenosphaera bilineatus – type locality for species
** †Sphenosphaera burginensis
** †Sphenosphaera capax
** †Sphenosphaera mohri
** †Sphenosphaera recurvus
** †Sphenosphaera rogersensis
** †Sphenosphaera troosti
* †Sphenothallus
* †Spicuchelodes
** †Spicuchelodes cressmani
* Fossilized shell of the Late Ordovician-Late Triassic brachiopod Spirifer †Spirifer
** †Spirifer bifurcatus
** †Spirifer increbescens
** †Spirifer keokuk
** †Spirifer lateralis
** †Spirifer rockymontanus
** †Spirifer subaequalis
** †Spirifer tenuicostatus
** †Spirifer washingtonensis
* †Spiriferellina – tentative report
* †Spiriferina
** †Spiriferina subelliptica
* †Sporangites
** †Sporangites huronensis
* †Springericrinus
** †Springericrinus magniventrus
* †Stauropteris
** †Stauropteris biseriata
* †Stegacanthia
* †Stegocoelia
** †Stegocoelia kentuckiensis
* †Steloxylon
** †Steloxylon irvingense
** †Steloxylon santaecrucis
* Fossils of the Ordovician-Silurian brittle star Stenaster †Stenaster
** †Stenaster obtusus – or unidentified comparable form
* †Stenomyelon
** †Stenomyelon muratum
* †Stenopora
* †Stenoscisma
** †Stenoscisma explanatum
* †Stephanozyga
** †Stephanozyga nodosa
* †Stereolasma
** †Stereolasma gallicalcar
** †Stereolasma rectum
* †Stereopteris
** †Stereopteris annularis
* †Stictopora
** †Stictopora neglecta
* Fossil preserved in situ of a Carboniferous tree-like club moss relative with attached Stigmaria rhizome system †Stigmaria
** †Stigmaria ficoides
** †Stigmaria wedingtonensis
* †Stigmatella
** †Stigmatella conica – or unidentified comparable form
** †Stigmatella multispinosa
* †Stinocrinus
** †Stinocrinus granulosus
* Stomatopora
** †Stomatopora arachnoidea
* †Straparollus
** †Straparollus spergenensis
* †Streblochondria
* †Streblopteria
* †Streptelasma
** †Streptelasma angulatum
** †Streptelasma divaricans
** †Streptelasma obliquum
** †Streptelasma scoleciforme
** †Streptelasma subvesiculare – tentative report
* †Striatopora
** †Striatopora huronensis
* †Strobeus
** †Strobeus paludinaeformis – or unidentified comparable form
* †Stromatocerium
** †Stromatocerium huronense
* †Strombodes
** †Strombodes shumardi
* Fossilized shell of the Ordovician-Silurian brachiopod Strophomena †Strophomena
** †Strophomena concordensis
** †Strophomena costellata – or unidentified comparable form
** †Strophomena maysvillensis
** †Strophomena musculosa – or unidentified comparable form
** †Strophomena neglecta
** †Strophomena planoconvexa
** †Strophomena planumbona
** †Strophomena sinuata
** †Strophomena sulcata
* †Strophostylus
** †Strophostylus chesterensis
** †Strophostylus wortheni
* †Subulites
** †Subulites parvus – type locality for species
* †Sulcoretepora
** †Sulcoretepora lineata
* †Synbathocrinus
** †Synbathocrinus angularis
** †Synbathocrinus dentatus
** †Synbathocrinus robustus
** †Synbathocrinus swallovi
* †Syringolites
** †Syringolites vesiculosus
* Fossil of the Devonian tabulate coral Syringopora †Syringopora
** †Syringopora hisingeri
** †Syringopora monroensis
** †Syringopora perelegans

## 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
* †Tabulipora
** †Tabulipora cestriensis
** †Tabulipora penerudis
** †Tabulipora ramosa
* †Talarocrinus
** †Talarocrinus simplex
* †Tancrediopsis
** †Tancrediopsis cuneata
* †Tarphophragma
** †Tarphophragma multitabulata
* Fossil of the Silurian-Carboniferous crinoid ("sea lily") Taxocrinus (right) †Taxocrinus
** †Taxocrinus colletti
** †Taxocrinus pustulosus
* †Technophorus
** †Technophorus cincinnatiense
** †Technophorus faberi
** †Technophorus punctostriatus
* †Teichochilina – tentative report
* †Temnodiscus
** †Temnodiscus nitidula
* †Tetracamera
** †Tetracamera arctirostrata
** †Tetracamera grosvenori
** †Tetracamera mutata
** †Tetracamera subcuneata
* †Tetradium
** †Tetradium approximatum
** †Tetradium cellulosum – or unidentified comparable form
* †Tetranota
** †Tetranota obsoleta
* †Thamniscus
* †Thamnopora
** †Thamnopora limitaris
* †Thamnoptychia
** †Thamnoptychia alternans
** †Thamnoptychia vermiculosa
* †Thecia
** †Thecia minor
* †Theelia
** †Theelia hexacneme – type locality for species
* †Thinocrinus
** †Thinocrinus lowei
* †Thuroholia
** †Thuroholia croneisi
** †Thuroholia floydensis – type locality for species
** †Thuroholia irregularis – type locality for species
** †Thuroholia wanlessi – type locality for species
* †Toichochilina
* †Torynifer
** †Torynifer pseudolineatus
** †Torynifer setigera
* †Trematis
* †Trepospira
** †Trepospira depressa
** †Trepospira illinoisensis
* Fossilized shell of the Ordovician nautiloid cephalopod Treptoceras †Treptoceras
** †Treptoceras cincinnatiensis
** †Treptoceras duseri
** †Treptoceras transversum
* †Triarthrus
** †Triarthrus eatoni
* †Triboloporus
** †Triboloporus cryptoplicatus
* †Triendoceras – tentative report
** †Triendoceras davisi – type locality for species
* †Trigonocarpus
* †Trigonodictya
** †Trigonodictya acuta
* †Trocholites
** †Trocholites faberi
* †Trochonema
** †Trochonema canadensis
** †Trochonema subcrassum
* †Trochonemella
** †Trochonemella notablis
* †Trochophyllum
* †Tropidodiscus
* †Tryplasma
** †Tryplasma cylindrica
** †Tryplasma mitella
** †Tryplasma prava
** †Tryplasma radicula

## 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
* †Ulodendron
** †Ulodendron majus
* †Ulrichia
** †Ulrichia nodosa
* Fossilized calyx ad partial stem of the Carboniferous crinoid ("sea lily") Ulrichicrinus †Ulrichicrinus
** †Ulrichicrinus agnatus
* †Ulrichocystis
** †Ulrichocystis eximia
* †Undulabucania
** †Undulabucania punctifrons
* †Uperocrinus
** †Uperocrinus acuminatus – type locality for species
** †Uperocrinus nashvillae
** †Uperocrinus pyriformis
** †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
* †Vaginoceras
* †Vallatotheca
** †Vallatotheca unguiformis
* †Vanuxemia
** †Vanuxemia dixonensis – or unidentified related form
** †Vanuxemia gibbosa
** †Vanuxemia nana – or unidentified comparable form
** †Vanuxemia sardesoni – or unidentified related form
* †Verrucosisporites
** †Verrucosisporites microtuberosus
* †Vestispora
** †Vestispora costata
* †Volsellina
** †Volsellina subelliptica
* †Vorticina
** †Vorticina anneae – type locality for species

## 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
* †Waagenella
** †Waagenella claxtonensis
* †Wachsmuthicrinus
** †Wachsmuthicrinus spinosulus
** †Wachsmuthicrinus spinulosus
* †Warthinia
** †Warthinia nodosa
* †Weissistachys
** †Weissistachys kentuckiensis
* †Wellergyi – type locality for genus
** †Wellergyi chesterensis
* †Whiteavesia
* †Wilsonites
** †Wilsonites circularis
** †Wilsonites vesicatus
* †Winchelloceras
** †Winchelloceras allei
** †Winchelloceras knappi – type locality for species
* †Worthenia
** †Worthenia tabulata
* †Worthenocrinus
** †Worthenocrinus hardinensis
* †Worthenopora

## 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
* †Xenocrinus
* †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
* †Zadelsdorfia – tentative report
* †Zaphrenthis
** †Zaphrenthis amplexiformis – tentative report
* †Zygospira
** †Zygospira cincinnatiensis
** †Zygospira kentuckyensis
** †Zygospira lebanonensis
** †Zygospira modesta