# List of the prehistoric life of Ohio

This list of the prehistoric life of Ohio contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Ohio.

## Precambrian

The Paleobiology Database records no known occurrences of Precambrian fossils in Ohio.

## Paleozoic
### Selected Paleozoic taxa of Ohio

* †Achatella
* †Acidaspis
* †Acleistoceras – tentative report
* †Acutichiton – type locality for genus
* †Adamanterpeton – type locality for genus
** †Adamanterpeton ohioensis – type locality for species
* †Aethaspis
* †Agnesia
* †Alethopteris
* †Ambedus – type locality for genus
* †Amphiscapha
* †Amplexopora
* †Annularia
** †Annularia asteris
** †Annularia radiata
** †Annularia sphenophylloides
** †Annularia stellata
* †Anthracodromeus
** †Anthracodromeus longipes – type locality for species
* Restoration of the face of the Carboniferous reptiliomorph Anthracosaurus †Anthracosaurus
* †Aphlebia
* †Archaeothyris
* †Arctinurus
* †Armenoceras
* †Artisia
* †Asterotheca
* †Athyris
* †Atrypa
** †Atrypa reticularis
** †Atrypa reticularus – report made of unidentified related form or using admittedly obsolete nomenclature
* †Augustoceras
* †Aulopora
** †Aulopora microbuccinata
* †Aviculopecten
** †Aviculopecten appalachianus – type locality for species
** †Aviculopecten columbianus – type locality for species
** †Aviculopecten coxanus
** †Aviculopecten fasciculatus
** †Aviculopecten occidentalis
** †Aviculopecten winchelli
* †Baldwinonus
* †Bellerophon
** †Bellerophon jeffersonensis
** †Bellerophon spergensis
* †Bembexia
* †Bickmorites
* Life restoration of the Carboniferous amphibian Brachydectes †Brachydectes – type locality for genus
** †Brachydectes newberryi – type locality for species
* †Broiliellus
* †Calamites
** †Calamites carinatus
** †Calamites cisti
** †Calamites suckowi
** †Calamites suckowii
** †Calamites undulatus
* †Callixylon
* †Camarotoechia
* Restoration of the Middle Ordovician-Silurian nautiloid cephalopod Cameroceras feeding on an Aphetoceras, while a quartet of Cyclostomiceras swim by †Cameroceras
* †Catenipora
* †Centroceras
* †Ceratocephala
* †Ceratopsis
* †Ceraurinus
* †Ceraurus
* †Chagrinia
* †Charactoceras
* †Chasmatopora
* †Chasmops
* †Chaunograptus
* †Chondrites
* †Chonetes
* Assemblage of fossilized shells of the Ordovician brachiopod Cincinnetina †Cincinnetina
** †Cincinnetina meeki
** †Cincinnetina multisecta
* †Cladochonus
* †Cladoselache
* †Clarkesvillia
* †Climacograptus
* †Coenites
* †Colosteus
* †Columnaria
** †Columnaria calicina
* †Composita
** †Composita subtilita
* †Conchidium
* †Constellaria
* †Cordaites
** †Cordaites principalis – or unidentified comparable form
* †Cornulites
** †Cornulites flexuosus
* Craniella
* †Crepipora
* †Ctenacanthus
* †Ctenerpeton
* †Ctenospondylus
* †Cyclonema
* †Cyclopteris
* †Cypricardinia
** †Cypricardinia indenta
* †Cyrtolites
* †Cyrtospirifer
* †Cystodictya
* †Decadocrinus
* †Diceratosaurus
** †Diceratosaurus brevirostris – type locality for species
* †Dictyonema
* †Dinichthys
** †Dinichthys herzeri
* †Diploceraspis
* †Diplograptus
* Discina
* †Dolichopterus
* Mounted skull of the Late Devonian placoderm fish Dunkleosteus †Dunkleosteus
* †Ecdyceras
* †Edmondia
* †Edon
* †Eldredgeops
** †Eldredgeops rana
* †Elita
* †Elpe
* †Elrodoceras
* †Emmonsia
* †Endoceras
* †Erettopterus
* †Erpetosaurus
* †Eucalyptocrinites
* †Euomphalus
** †Euomphalus planodorsatus
* Life restoration of Silurian eurypterid ("sea scorpion") Eurypterus †Eurypterus
** †Eurypterus ornatus
* †Eusauropleura – type locality for genus
* †Faberia
* †Faberoceras
* †Favosites
** †Favosites discoideus
** †Favosites favosus
** †Favosites hisingeri
** †Favosites turbinatus
* †Fayettoceras
* †Fenestella
* †Flexicalymene
** †Flexicalymene meeki
* †Foerstia
* †Fusulina
* †Gilbertsocrinus
* †Glyptocrinus
* Multiple views of a fossil of the Ordovician horn coral Grewingkia †Grewingkia
** †Grewingkia rusticum
* †Hallopora
** †Hallopora subnodosa
* †Halysites
* †Hamiltonella
* †Helcionopsis
* †Heliophyllum
** †Heliophyllum halli
* †Helminthochiton
* †Hexagonaria
* †Hexameroceras
* †Hindia
* †Holopea
* †Holoptychus – or unidentified comparable form
* †Hyolithes
* †Icriodus
* †Iocrinus
* †Isodectes
* †Isonema
* Fossil of the Middle-Late Ordovician giant trilobite Isotelus. †Isotelus
** †Isotelus maximus
* †Kindleoceras
* †Kionoceras
* †Kockelella
* †Lambeoceras
* †Leiosphaeridia
* †Lepidodendron
** †Lepidodendron aculeatum
* Lingula
* †Liroceras – tentative report
* †Loxomma
** †Loxomma lintonensis – type locality for species
* †Maelonoceras
* †Manitoulinoceras
* †Manticoceras
* †Marsupiocrinus
* Life restoration of the Carboniferous amphibian Megalocephalus †Megalocephalus – type locality for genus
** †Megalocephalus lineolatus – type locality for species
* †Megalograptus
* †Metaxys
* †Michelinoceras
* Modiolus
* †Molgophis – type locality for genus
* †Mucrospirifer
** †Mucrospirifer grabaui – or unidentified comparable form
** †Mucrospirifer mucronatus
** †Mucrospirifer prolificus
* †Murchisonia
* Fossilized shell of the Early Devonian – Triassic sea snail Naticopsis †Naticopsis
** †Naticopsis comperta
** †Naticopsis levis
* †Neospirifer
** †Neospirifer cameratus
** †Neospirifer dunbari
* †Neuropteris
** †Neuropteris heterophylla
** †Neuropteris ovata
** †Neuropteris scheuchzeri
* †Nodonema
* Nucula
* † Nyassa
* †Odonterpeton – type locality for genus
** †Odonterpeton triangulare – type locality for species
* †Odontopleura
* †Oestocephalus – type locality for genus
** †Oestocephalus amphiuminum – type locality for species
* †Olenoides
* †Oncoceras
* Life restoration of the Carboniferous-Permian synapsid (mammal precursor) Ophiacodon †Ophiacodon
** †Ophiacodon uniformis – or unidentified comparable form
* †Orthoceras
* †Oulodus
* †Ozarkodina
** †Ozarkodina confluens
* †Paraspirifer
* †Pattersonia
* †Pecopteris
** †Pecopteris arborescens
** †Pecopteris hemitelioides
** †Pecopteris unita
* †Pentamerus
* †Petalodus
* Life restoration of the Carboniferous-Permian amphibian Phlegethontia. †Phlegethontia – type locality for genus
** †Phlegethontia linearis – type locality for species
** †Phlegethontia longissima – type locality for species
* †Phragmolites
** †Phragmolites elegans – type locality for species
* †Phylloporina
* Pinna
* †Plaesiomys
* †Platyceras
** †Platyceras bucculentum
** †Platyceras carinatum
** †Platyceras rarispinum
* †Platyrhinops – type locality for genus
* Fossilized shell of the Middle Ordovician-Silurian brachiopod Platystrophia †Platystrophia
** †Platystrophia acutilirata
** †Platystrophia annieana
** †Platystrophia clarksvillensis
** †Platystrophia cypha
** †Platystrophia moritura
* †Pleurodictyum
* †Pleuroptyx – type locality for genus
* †Pleurorthoceras
* †Poleumita
* †Polygnathus
** †Polygnathus eiflius
** †Polygnathus linguiformis
** †Polygnathus pseudofoliatus
** †Polygnathus xylus
* †Posidonia
* †Proetus
* †Protobalanus
* †Protosalvinia
* Life restoration with a conifer-like body plan of the Silurian-Late Devonian tree-like probable fungus Prototaxites. John William Dawson (1888). †Prototaxites
* †Pterochiton
* †Pterotheca
* †Pterygotus
* †Ptyonius
** †Ptyonius marshii – type locality for species
* †Pugnax
* †Reteocrinus
* †Rhizocorallium
* †Richmondoceras
* †Rusophycus
* †Samaropsis
* †Sauropleura – type locality for genus
** †Sauropleura pectinata – type locality for species
* †Sigillaria
** †Sigillaria brardii
** †Sigillaria elegans
* †Similodonta – tentative report
* Solemya
* †Solenomorpha
* †Sowerbyella
* Fossilized leaves and branches of the Devonian-Triassic horsetail relative Sphenophyllum †Sphenophyllum
** †Sphenophyllum majus
** †Sphenophyllum oblongifolium
* †Sphenopteris
** †Sphenopteris elegans – or unidentified comparable form
* †Sphenothallus
* †Spirifer
** †Spirifer opimus
* Spirorbis
* †Spyroceras
* †Stegops
* Life restorations of a male (foreground) and female (background) of the Late Devonian-Carboniferous Chimaera relative Stethacanthus †Stethacanthus
** †Stethacanthus altonensis
* †Stigmatella
* †Strophomena
** †Strophomena concordensis
** †Strophomena erratica
** †Strophomena extenuata
** †Strophomena neglecta
** †Strophomena nutans
** †Strophomena planumbona
** †Strophomena sulcata
* †Stylonema
* †Subulites
* †Syntomopterus
* †Syringopora – tentative report
* †Teichichnus
* †Tentaculites
* †Tetradium
* †Tornoceras
* †Treptoceras
* †Triarthrus
* †Triendoceras – tentative report
* †Trocholites
* Life restoration of the Carboniferous amphibian Tuditanus †Tuditanus – type locality for genus
** †Tuditanus punctulatus – type locality for species
* †Urasterella
* †Vinella
* †Walchia
* †Westonoceras
* †Whiteavesia
* †Wilkingia
* †Worthenia
* †Wurmiella
** †Wurmiella excavata
* †Xyloiulus
* †Zittelloceras
* †Zoophycos

## Mesozoic

The Paleobiology Database records no known occurrences of Mesozoic fossils in Ohio.

## Cenozoic

* Acella
** †Acella haldermani
* Amnicola
* †Arctodus
** †Arctodus simus
* †Bembidium
** †Bembidium fragmentum – type locality for species
* Castor
** †Castor canadensis
* Mounted fossilized skeleton of the Pliocene-Pleistocene giant beaver Castoroides †Castoroides
** †Castoroides ohioensis
* †Cervalces
** †Cervalces scotti
* Clethrionomys
** †Clethrionomys gapperi
* Equus
* Erethizon
** †Erethizon dorsatum
* Fossaria
* Gyraulus
** †Gyraulus deflectus
** †Gyraulus parvus
* Helisoma
** †Helisoma anceps
* Helophorus
** †Helophorus rigescens – type locality for species
* †Hydrochus
** †Hydrochus amictus – type locality for species
* Lucina
* Lymnaea
* †Mammut
** Restoration of a Mammut americanum, or American mastodon †Mammut americanum
* †Megalonyx
** †Megalonyx jeffersonii
* †Meomphix
* Microtus
** †Microtus xanthognathus
* Mictomys
** †Mictomys borealis
* Mustela
** †Mustela americana
** †Mustela richardsonii
* Odocoileus
** A living Odocoileus virginianus, or white-tailed deer †Odocoileus virginianus
* Ondatra
** †Ondatra zibethicus
* Pekania
** †Pekania pennanti
* Phenacomys
** †Phenacomys intermedius
* Physa
** †Physa heterostropha – or unidentified comparable form
* Picea
* Planorbis
* Restoration of a herd of alarmed Miocene-Pleistocene peccaries of the genus Platygonus. Charles R. Knight (1922). †Platygonus
** †Platygonus compressus
* Promenetus
** †Promenetus exacuous
* Pterostichus
** †Pterostichus dormitans – type locality for species
* Rangifer
** †Rangifer tarandus
* Sorex
** †Sorex cinereus
** †Sorex hoyi
* Sphaerium
* Stagnicola
** †Stagnicola lanceata
* Ursus
** A living Ursus arctos, or brown bear †Ursus arctos – type locality for species
* Valvata
** †Valvata tricarinata