List of the prehistoric life of Oklahoma

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

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

Selected Paleozoic taxa of Oklahoma

 * †Abyssomedon – type locality for genus
 * †Abyssomedon williamsi – type locality for species
 * Acheloma 12DB.jpg †[[Acheloma]]
 * †Acheloma cumminsi – or unidentified comparable form
 * †Acheloma dunni – type locality for species
 * †Acleistorhinus – type locality for genus
 * †Acleistorhinus pteroticus – type locality for species
 * †Albertoceras
 * †Alethopteris
 * †Alethopteris serlii
 * †Alexandrinia
 * †Alexandrinia directa – type locality for species
 * Ammodiscus
 * †Amphiscapha
 * †Anabathra
 * †Ananaspis
 * †Anataphrus
 * †Angelosaurus
 * †Angelosaurus romeri – type locality for species
 * † Anisophyllum
 * Annularia Stellata.jpg †[[Annularia]]
 * †Annularia sphenophylloides
 * †Annularia stellata
 * †Anomphalus
 * †Anthracoceras
 * †Aphlebia
 * †Archaeocidaris
 * Archaeolithophyllum
 * †Archeria
 * †Archimedes
 * †Archimedes distans
 * †Archimedes meekanoides
 * †Archimedes meekanus – or unidentified comparable form
 * †Arkanites
 * †Aspidosaurus – or unidentified comparable form
 * †Athyris
 * †Atrypa
 * Aviculopecten subcardiformis01.JPG †[[Aviculopecten]]
 * †Aviculopecten halensis
 * †Aviculopecten multilineatus
 * †Aviculopecten nodocosta – type locality for species
 * †Avonia – tentative report
 * †Axinolobus
 * †Baeotherates – type locality for genus
 * †Baeotherates fortsillensis – type locality for species
 * †Bellerophon
 * †Benthamaspis
 * †Bicornella
 * †Bilinguites
 * †Bisatoceras – type locality for genus
 * †Bolbocephalus
 * †Bolosaurus
 * †Bolosaurus grandis – type locality for species
 * †Bolosaurus striatus
 * †Bolterpeton – type locality for genus
 * †Bothriocidaris
 * Cacops1DB.jpg †[[Cacops]]
 * †Cacops morrisi – type locality for species
 * †Cacops woehri – type locality for species
 * †Calamites
 * †Callipteris
 * †Calymene
 * †Calymene clavicula
 * †Calyptaulax
 * †Camarotoechia
 * † Camerate
 * †Campbelloceras
 * †Cancelloceras
 * †Capnophyllum
 * Captorhinus aguti p.jpg †[[Captorhinus]]
 * †Captorhinus aguti
 * †Cardiocephalus
 * †Cardiocephalus peabodyi – type locality for species
 * †Cardiocephalus sternbergi – or unidentified comparable form
 * †Carolinites
 * †Ceramopora
 * †Ceratiocaris
 * †Ceratocephala
 * †Ceraurinella
 * †Ceraurus
 * Trilobite Ordovicien 8127.jpg †[[Cheirurus]]
 * †Chonetes
 * †Chonetes mesoloba
 * †Cladochonus
 * †Cleiothyridina
 * †Cleiothyridina orbicularis
 * †Clepsydrops
 * Cliona
 * †Colobomycter – type locality for genus
 * †Colobomycter pholeter – type locality for species
 * †Composita
 * †Composita mexicana
 * †Composita rotunda
 * †Composita subcircularis
 * †Composita subtilita
 * †Coolinia
 * †Cordania
 * †Cordania falcata
 * †Cordylodus
 * †Cornulites
 * Cotylorhynchus romeria from Norman, Oklahoma.jpg †[[Cotylorhynchus]] – type locality for genus
 * †Cotylorhynchus bransoni – type locality for species
 * †Cotylorhynchus romeri – type locality for species
 * Crania
 * †Craniops
 * †Cravenoceras
 * †Cricotus
 * †Crossotelos – type locality for genus
 * †Ctenacanthus – report made of unidentified related form or using admittedly obsolete nomenclature
 * †Curtognathus
 * †Cybelopsis
 * †Cycloceras
 * †Cyclonema
 * Cyclopteris fossil cropped.png †[[Cyclopteris]]
 * †Cyphaspis
 * †Cyrtograptus
 * †Cystodictya
 * †Cystodictya elegans – type locality for species
 * †Dalmanites
 * †Delorhynchus – type locality for genus
 * †Delorhynchus cifellii – type locality for species
 * †Delorhynchus priscus – type locality for species
 * †Diacalymene
 * †Diadectes
 * †Dicoelosia
 * †Dicranurus
 * †Dicranurus hamatus
 * †Dictyonema
 * †Dimeropygiella
 * Dimetrodon8DB.jpg †[[Dimetrodon]]
 * †Dimetrodon dollovianus
 * †Dimetrodon limbatus – or unidentified comparable form
 * †Dimetrodon loomisi
 * †Dimetrodon macrospondylus
 * †Diplocaulus – type locality for genus
 * †Diplocaulus magnicornis
 * †Diplograptus
 * †Discitoceras
 * †Doleserpeton – type locality for genus
 * †Domatoceras
 * †Eatonia
 * †Echinaria
 * †Echinosphaerites
 * †Ectosteorhachis
 * Edaphosaurus-cruciger jconway cropped.jpg †[[Edaphosaurus]]
 * †Edaphosaurus cruciger
 * †Edestus – type locality for genus
 * †Edmondia
 * †Eodictyonella
 * †Eospirifer
 * †Epiphyton
 * †Eryops
 * †Eryops megacephalus
 * †Estheria
 * †Eucalyptocrinites
 * †Euryodus
 * †Euryodus dalyae – type locality for species
 * †Euryodus primus – or unidentified comparable form
 * †Favosites
 * †Fayella – type locality for genus
 * †Feeserpeton – type locality for genus
 * †Feeserpeton oklahomensis – type locality for species
 * Fenestella from Couvin Belgium.jpg †[[Fenestella]]
 * †Fenestella cestriensis
 * †Fenestella exigua
 * †Foerstia
 * †Fragiscutum
 * †Frencrinuroides
 * †Fusulina
 * †Gastrioceras
 * †Girvanella
 * †Glaphurochiton
 * †Glyptopleura
 * †Gnathodus
 * GnathorhizaDB.jpg †[[Gnathorhiza]]
 * †Goniatites
 * †Gotlandochiton
 * †Gymnophyllum
 * †Gymnophyllum wardi
 * †Hallopora
 * †Halysites
 * †Hapsidopareion – type locality for genus
 * †Hapsidopareion lepton – type locality for species
 * †Helminthochiton
 * †Hibbertia
 * †Hindia
 * †Holopea – tentative report
 * †Huntoniatonia
 * †Idiognathodus
 * †Illaenus
 * Isotelus brachycephalus.JPG †[[Isotelus]]
 * †Ivoechiton
 * †Jeffersonia
 * †Kainops
 * †Kawina
 * †Kennedya
 * †Kockelella
 * †Krausella
 * †Labidosaurikos – type locality for genus
 * Labidosaurus.jpg †[[Labidosaurus]]
 * †Leonaspis
 * †Lepidodendron
 * Lingula
 * †Lingulella
 * †Liroceras
 * †Lisca
 * Lithophaga
 * †Llistrofus – type locality for genus
 * †Lonchodomas
 * †Lutesvillia
 * Lysorophus.jpg †[[Lysorophus]]
 * †Macroleter
 * †Macroleter agilis – type locality for species
 * †Marsupiocrinus
 * †Maximites
 * †Mcqueenoceras
 * †Meganeuropsis
 * †Meristella
 * †Meristina
 * †Metacoceras
 * †Michelinoceras
 * †Micraroter – type locality for genus
 * †Micraroter erythrogeios – type locality for species
 * †Microleter – type locality for genus
 * †Microleter mckinzieorum – type locality for species
 * †Micula – tentative report
 * †Misthodotes
 * Modiolus
 * †Monograptus
 * †Moravia
 * Mycterosaurus.jpg †[[Mycterosaurus]] – type locality for genus
 * †Mycterosaurus longiceps – type locality for species
 * †Nannaroter – type locality for genus
 * †Nannospondylus – type locality for genus
 * †Naticopsis
 * †Naticopsis transversa – type locality for species
 * †Neospirifer
 * †Neospirifer dunbari
 * †Neuropteris
 * †Neuropteris heterophylla
 * †Neuropteris obliqua
 * †Neuropteris rarinervis
 * Nucula
 * †Odontochile
 * †Oinochoe
 * † Oliveria
 * Ophiacodon mirus cropped.png †[[Ophiacodon]]
 * †Ophiacodon major
 * †Ophiacodon mirus – or unidentified comparable form
 * †Ophiacodon uniformis
 * †Opisthodontosaurus – type locality for genus
 * †Oromycter – type locality for genus
 * †Oromycter dolesorum – type locality for species
 * †Orovenator – type locality for genus
 * †Orovenator mayorum – type locality for species
 * †Orthacanthus
 * †Orthoceras
 * †Oulodus
 * †Ozarkodina
 * †Ozarkodina confluens
 * †Pachylyroceras
 * [[File:Paciphacops claviger, Early Devonian, Wenban Limestone, Cortez Range, Nevada, USA - Houston Museum of Natural Science - DSC01635.JPG|thumb|upright=0.636|Fossil of the trilobite Paciphacops]] †[[Paciphacops]]
 * †Paladin
 * Palaeoaplysina – tentative report
 * †Paleochiton
 * †Paralegoceras
 * †Pasawioops – type locality for genus
 * †Pecopteris
 * †Pecopteris hemitelioides
 * †Pentremites
 * †Peripetoceras
 * †Perryella – type locality for genus
 * †Petalodus
 * †Phillipsia – tentative report
 * †Phragmolites
 * †Pinnularia
 * †Plaesiomys
 * †Platyceras
 * †Platycrinites
 * †Platysomus
 * †Platystrophia
 * †Plectodonta
 * †Pleuracanthus
 * Pleurocystites squamosus.jpg †[[Pleurocystites]]
 * †Plicochonetes
 * †Polygnathodella – type locality for genus
 * †Polygnathus
 * †Prioniodus
 * †Prodentalium
 * †Proetus
 * †Protocaptorhinus
 * †Protocaptorhinus pricei
 * †Punka
 * †Rayella
 * †Rayonnoceras
 * †Reedops
 * †Remopleurides
 * †Reteocrinus
 * †Rhopalia
 * †Rhynchonkos
 * †Rhynchonkos stovalli – type locality for species
 * Rogerella
 * †Sagenodus
 * †Sandia
 * †Scytalocrinus
 * Seymouria1.jpg †[[Seymouria]]
 * †Seymouria baylorensis
 * †Sigillaria
 * †Sillerpeton – type locality for genus
 * †Skenidioides
 * Solecurtus
 * Solemya – report made of unidentified related form or using admittedly obsolete nomenclature
 * †Solenochilus
 * †Solenomorpha – tentative report
 * †Sowerbyella
 * †Sphaerexochus
 * †Sphaerocoryphe
 * Sphenophyllum miravallis cropped.jpg †[[Sphenophyllum]]
 * †Sphenophyllum emarginatum
 * †Sphenophyllum gilmorei
 * †Sphenophyllum latifolium – or unidentified comparable form
 * †Sphenophyllum stoukenbergi – tentative report
 * †Sphenopteris
 * †Spirifer
 * †Spirifer grimesi
 * †Spirifer opimus
 * Spirorbis
 * †Streptognathodus
 * †Stroboceras
 * Strophomena costellata brachial.jpg †[[Strophomena]]
 * †Strophomena costellata
 * †Strophomena neglecta
 * †Strophomena perconcava – or unidentified comparable form
 * †Strophomena planumbona
 * †Tainoceras
 * †Tarphyceras
 * †Tentaculites
 * †Tersomius
 * †Tersomius texensis – or unidentified comparable form
 * †Tetrataxis
 * Textularia
 * †Thoracoceras
 * †Thrausmosaurus – type locality for genus
 * †Trimerorhachis
 * †Trimerorhachis insignis
 * †Urasterella
 * †Varanodon – type locality for genus
 * †Varanodon agilis – type locality for species
 * Varanops brevirostris2DB.jpg †[[Varanops]]
 * †Varanops brevirostris – or unidentified comparable form
 * †Vinella
 * †Walchia
 * †Watongia – type locality for genus
 * †Watongia meieri – type locality for species
 * †Wilkingia
 * †Worthenia
 * †Wurmiella
 * †Wurmiella excavata
 * †Xenacanthus
 * Yoldia
 * †Zatrachys

Mesozoic

 * Acrocantosaurus4.jpg †[[Acrocanthosaurus]] – type locality for genus
 * †Acrocanthosaurus atokensis – type locality for species
 * †Albanerpeton
 * †Albanerpeton arthridion
 * †Allosaurus – type locality for genus
 * †Allosaurus fragilis – type locality for species
 * Ammobaculites
 * †Ammobaculites subgoodlandensis – type locality for species
 * †Apatosaurus
 * †Arcellites
 * †Arcellites hexapartitus – or unidentified comparable form
 * †Astroconodon
 * †Astroconodon denisoni – or unidentified comparable form
 * †Astrodon
 * †Atokasaurus – type locality for genus
 * †Atokasaurus metarsiodon – type locality for species
 * †Atokatheridium – type locality for genus
 * †Atokatheridium boreni – type locality for species
 * †Barosaurus
 * †Bernissartia
 * †Brachiosaurus
 * Apatosaurus Clean.png †[[Brontosaurus]]
 * †Brontosaurus parvus
 * †Camarasaurus
 * †Camptosaurus
 * †Camptosaurus dispar
 * †Caririchnium
 * †Caririchnium leonaridii
 * †Ceratodus
 * †Ceratosaurus – tentative report
 * Cythere
 * †Cythere concentrica
 * †Cythereis
 * †Cythereis carpenterae
 * †Cythereis mahonae
 * †Cythereis subgoodlandensis – type locality for species
 * Cytherella
 * †Cytherella ovata
 * Cytherelloidea
 * †Cytherelloidea rhomboidalis – type locality for species
 * †Cytherelloidea subgoodlandensis – type locality for species
 * Cytheridea
 * †Cytheridea amygdaloides
 * †Cytheridea oliverensis
 * †Cytheridea rotundus – or unidentified comparable form
 * Cytheropteron
 * †Cytheropteron howelli
 * †Cytheropteron trinitiensis
 * Deinonychus_ewilloughby.png †[[Deinonychus]]
 * †Deinonychus antirrhopus
 * †Diplodocus
 * †Escharoides – tentative report
 * †Escharoides nomas – type locality for species
 * †Exogyra
 * †Exogyra ponderosa
 * †Exogyra texana
 * †Glyptops
 * Goniopholis BW.jpg †[[Goniopholis]]
 * †Goniopholis stovalli – type locality for species
 * †Grallator
 * †Gyronchus
 * †Gyronchus dumblei
 * †Holoclemensia
 * †Holoclemensia texana
 * †Hybodus
 * †Hybodus butleri
 * †Kermackia
 * †Kermackia texana
 * Buettneria.jpg †[[Koskinonodon]]
 * Lituotuba
 * †Lonchidion
 * †Lonchidion anitae
 * †Magnoavipes
 * †Megalosauripus
 * †Naomichelys
 * †Oklatheridium – type locality for genus
 * †Oklatheridium minax – type locality for species
 * †Oklatheridium szalayi – type locality for species
 * Ostrea
 * †Ostrea crenulimargo
 * Pycnodontidae - Palaeobalistum goedeli.JPG †[[Palaeobalistum]] – tentative report
 * †Pappotherium
 * †Pappotherium pattersoni
 * †Paracimexomys – tentative report
 * †Paracimexomys crossi – type locality for species
 * Paracypris
 * †Paracypris siliqua
 * Patellina
 * †Patellina subcretacea
 * Planulina
 * †Pleurocoelus
 * †Pteraichnus
 * †Ptilotodon – type locality for genus
 * †Ptilotodon wilsoni – type locality for species
 * Pyripora
 * Ramphonotus
 * †Ramphonotus pedunculatus
 * Ramulina
 * Reophax
 * †Reophax subgoodlandensis – type locality for species
 * †Saurophaganax – type locality for genus
 * †Saurophaganax maximus – type locality for species
 * †Sauroposeidon – type locality for genus
 * †Sauroposeidon proteles – type locality for species
 * †Stegosaurus
 * †Tenontosaurus
 * Textularia
 * †Textularia conica
 * Vaginulina
 * †Vaginulina intumescens

Cenozoic

 * †Adelphailurus
 * †Aelurodon
 * †Aelurodon taxoides – or unidentified comparable form
 * †Aepycamelus
 * †Aepycamelus robustus
 * †Agriotherium
 * †Agriotherium schneideri
 * †Alforjas
 * †Alforjas taylori
 * Alligator
 * Amebelodon fricki.jpg †[[Amebelodon]]
 * †Amphimachairodus
 * †Amphimachairodus coloradensis
 * †Aphelops
 * †Aphelops malacorhinus
 * †Arctonasua
 * †Arctonasua fricki – type locality for species
 * †Astrohippus
 * †Astrohippus ansae
 * †Barbourofelis
 * †Barbourofelis loveorum
 * Bison
 * †Bison antiquus
 * Bison latifrons fossil buffalo (Pleistocene; North America) 1 (15257877377).jpg †[[Bison latifrons]] – or unidentified comparable form
 * Blarina
 * †Blarina brevicauda
 * †Bootherium
 * †Bootherium bombifrons
 * †Borophagus
 * †Borophagus secundus
 * †Buisnictis
 * †Buisnictis schoffi – type locality for species
 * †Calippus
 * †Calippus martini – type locality for species
 * †Calippus regulus
 * Camelus hesternus Sergiodlarosa.jpg †[[Camelops]]
 * Canis
 * †Canis ferox
 * †Canis latrans
 * †Carpocyon
 * †Carpocyon limosus
 * †Castoroides
 * †Castoroides ohioensis – or unidentified comparable form
 * Chaetodipus
 * †Chaetodipus hispidus – or unidentified comparable form
 * Coluber
 * †Coluber constrictor
 * †Copemys
 * †Copemys mariae – type locality for species
 * †Copemys shotwelli
 * †Cormohipparion
 * †Cormohipparion occidentale
 * Crotalus
 * †Crotalus viridis – or unidentified comparable form
 * Cuvieronius.jpg †[[Cuvieronius]]
 * †Cuvieronius priestleyi
 * Cynomys
 * †Cynomys ludovicianus
 * Dasypus
 * †Dasypus bellus
 * †Desmathyus
 * †Desmathyus brachydontus
 * †Dinohippus
 * †Dinohippus leidyanus
 * †Dipoides
 * †Dipoides stovalli
 * †Domninoides
 * †Domninoides hessei – type locality for species
 * †Domninoides knoxjonesi – type locality for species
 * Elaphe
 * †Elaphe buisi – type locality for species
 * [[File:Black Rat Snake - Elaphe obsoleta obsoleta, Merrimac Farm Wildlife Management Area, Virginia.jpg|thumb|upright|A living [[Pantherophis obsoletus]], or black rat snake]] †Elaphe obsoleta – or unidentified comparable form
 * †Elaphe vulpina
 * †Epicyon
 * †Epicyon haydeni
 * †Epicyon saevus
 * Equus
 * †Equus excelsus
 * †Equus francisci
 * †Equus giganteus
 * †Equus niobrarensis
 * †Equus scotti
 * Euceratherium cropped.png †[[Euceratherium]]
 * †Euceratherium collinum – type locality for species
 * †Eucyon
 * †Eucyon davisi
 * Felis
 * †Felis rexroadensis
 * Geochelone
 * Geomys
 * †Geomys bursarius
 * †Gigantocamelus
 * †Gigantocamelus spatulus
 * Glyptotherium cropped.jpg †[[Glyptotherium]]
 * †Glyptotherium arizonae
 * †Gomphotherium
 * †Gomphotherium obscurum
 * Gopherus
 * †Hemiauchenia
 * †Hemiauchenia macrocephala
 * †Hesperoscalops
 * †Hesperotestudo
 * †Hesperotestudo riggsi
 * Heterodon
 * †Heterodon nasicus
 * †Heterodon platyrhinos
 * †Heterodon plionasicus
 * †Hipparion
 * †Hipparion tehonense
 * †Hippotherium
 * Homotherium serum.jpg †[[Homotherium]] – type locality for genus
 * †Homotherium serum – type locality for species
 * †Hypolagus
 * †Hypolagus vetus
 * Lampropeltis
 * †Lampropeltis doliata
 * †Lampropeltis getulus
 * †Lampropeltis triangulum
 * Lasionycteris
 * †Lasionycteris noctivagans
 * †Leptodontomys
 * Lepus
 * Lophodytes
 * †Lophodytes cucullatus
 * Lynx
 * †Lynx proterolyncis
 * †Macrognathomys
 * †Macrognathomys gemmacolis
 * †Mammut
 * †Mammuthus
 * Columbian mammoth cropped.png †[[Mammuthus columbi]]
 * †Mammuthus hayi
 * Marmota
 * †Megalonyx
 * †Megalonyx jeffersonii
 * †Megatylopus
 * †Megatylopus matthewi
 * †Merychippus
 * †Merychippus coloradense – or unidentified comparable form
 * †Merychyus
 * †Merychyus novomexicanus
 * Microtus
 * †Microtus ochrogaster – or unidentified comparable form
 * †Microtus pennsylvanicus
 * †Miospermophilus
 * †Miospermophilus lavertyi – type locality for species
 * †Mylohyus
 * †Mylohyus fossilis
 * Myotis
 * †Myotis yumanensis – or unidentified comparable form
 * Nannippus jaw.JPG †[[Nannippus]]
 * †Nannippus aztecus
 * †Nannippus lenticularis
 * †Neohipparion
 * †Neohipparion eurystyle
 * †Neohipparion gidleyi
 * †Neohipparion leptode
 * Neotoma
 * Nerodia
 * †Nimravides
 * †Nimravides thinobates – or unidentified comparable form
 * †Nothodipoides
 * †Nothodipoides planus – type locality for species
 * Nothrotheriops.jpg †[[Nothrotheriops]]
 * †Nothrotheriops texanus
 * Odocoileus
 * †Oklahomalagus
 * †Oklahomalagus whisenhunti – type locality for species
 * Ondatra
 * †Ondatra zibethicus
 * Onychomys
 * †Onychomys leucogaster – or unidentified comparable form
 * Ophisaurus
 * †Ophisaurus attenuatus
 * San Diego Paramylodon.jpg Paramylodon]] †Paramylodon
 * †Paramylodon harlani
 * †Paranasua
 * †Pediomeryx
 * †Pediomeryx hemphillensis
 * Perognathus
 * †Perognathus mclaughlini – or unidentified comparable form
 * Peromyscus
 * †Peromyscus berendsensis – type locality for species
 * †Peromyscus cochrani – or unidentified comparable form
 * Pipistrellus
 * †Pipistrellus subflavus
 * Pituophis
 * †Pituophis catenifer
 * †Pituophis melanoleucus
 * Platygonus leptorhinus cropped.png of the genus Platygonus. Charles R. Knight (1922).]] †Platygonus
 * †Platygonus vetus – or unidentified comparable form
 * †Pleiolama
 * †Pleiolama vera
 * †Plesiogulo
 * †Plesiogulo marshalli
 * †Pliogeomys
 * †Pliogeomys buisi – type locality for species
 * †Pliohippus
 * †Pliohippus nobilis
 * †Pliohippus pernix
 * †Pliotaxidea
 * †Pliotaxidea nevadensis – or unidentified comparable form
 * Podomys
 * †Podomys oklahomensis
 * †Procamelus
 * †Procamelus grandis – or unidentified comparable form
 * †Prodipodomys
 * †Pronotolagus
 * †Pronotolagus apachensis
 * Pseudacris
 * †Pseudacris triseriata
 * Pseudemys
 * †Pseudemys hilli – type locality for species
 * †Pseudhipparion
 * †Pseudhipparion gratum
 * †Pseudhipparion simpsoni
 * †Pseudhipparion skinneri
 * Reithrodontomys
 * †Serbelodon – or unidentified comparable form
 * Smilodon fatalis.jpg †[[Smilodon]]
 * †Smilodon fatalis
 * Sorex
 * †Sorex arcticus
 * †Sorex cinereus
 * †Sorex palustris
 * Spermophilus
 * †Spermophilus dotti
 * †Spermophilus franklinii
 * †Spermophilus rexroadensis
 * †Spermophilus richardsonii – or unidentified comparable form
 * †Spermophilus tridecemlineatus
 * Sthenictis1.JPG [[Sthenictis]]
 * Sylvilagus
 * Synaptomys
 * †Synaptomys bunkeri
 * Tamias
 * †Tamias striatus
 * Tapirus
 * †Tapirus haysii
 * †Tapirus veroensis
 * Teleoceras Horsfall cropped.jpg †[[Teleoceras]]
 * †Teleoceras fossiger
 * †Teleoceras guymonense – type locality for species
 * †Teleoceras hicksi
 * Terrapene
 * †Terrapene parornata – type locality for species
 * †Texoceros
 * †Texoceros guymonensis – type locality for species
 * †Texoceros minorei – type locality for species
 * Thamnophis
 * †Thamnophis radix
 * Thomomys
 * †Thomomys talpoides
 * †Tregosorex
 * †Tregosorex holmani
 * †Untermannerix
 * †Untermannerix copiosus
 * Vulpes
 * †Vulpes stenognathus – type locality for species
 * Swift Fox Colorado Wolf and Wildlife cropped.jpg †[[Vulpes velox]]
 * †Yumaceras
 * †Yumaceras figginsi – or unidentified comparable form
 * Zapus