List of the Cenozoic life of Kansas
# List of the Cenozoic life of Kansas

This list of the Cenozoic life of Kansas contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Kansas and are between 66 million and 10,000 years of age.

## A

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* Acris
   * †Acris crepitans
* †Adelphailurus
   * †Adelphailurus kansensis – type locality for species
* Fossilized skull of the Miocene bone-crushing dog Aelurodon †Aelurodon
   * †Aelurodon taxoides
* Agkistrodon
   * †Agkistrodon contortix
* †Agriocharis
   * †Agriocharis progenes – type locality for species
* †Agriotherium
* †Alforjas
   * †Alforjas taylori
* †Alilepus
   * †Alilepus hibbardi
* †Allogona
   * †Allogona profunda
* †Allophaiomys
   * †Allophaiomys pliocaenicus
* †Ambystoma
   * †Ambystoma maculatum
   * †Ambystoma tigrinum
* Life restoration of the Miocene elephant relative Amebelodon. Margret Flinsch (1932). †Amebelodon
   * †Amebelodon britti
* Amia
   * †Amia calva
* †Amphimachairodus
   * †Amphimachairodus coloradensis
* Anas
   * †Anas crecca
* †Anchiblarinella
   * †Anchiblarinella wakeeneyensis – type locality for species
* †Aphelops
   * †Aphelops malacorhinus
   * †Aphelops mutilus
* Aplodinotus
   * †Aplodinotus grunniens – or unidentified comparable form
* †Arctodus
   * †Arctodus pristinus – or unidentified comparable form
   * †Arctodus simus
* †Astrohippus
   * †Astrohippus ansae

## B

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* Baiomys
   * †Baiomys kolbi – type locality for species
   * †Baiomys rexroadi – type locality for species
* Fossilized skull of the Miocene-Pliocene false saber-toothed cat Barbourofelis †Barbourofelis
* Bassariscus
   * †Bassariscus casei – type locality for species
   * †Bassariscus ogallalae
* †Bensonomys
   * †Bensonomys eliasi
   * †Bensonomys meadensis – type locality for species
   * †Bensonomys stirtoni
* †Berriochloa
   * †Berriochloa amphoralis
   * †Berriochloa maxima
   * †Berriochloa minuta
   * †Berriochloa pumila
   * †Berriochloa tuberculata
   * †Berriochloa variegata
* †Biorbia
   * †Biorbia fossilia
* Bison
   * †Bison antiquus – type locality for species
   * †Bison bison
   * Mounted fossilized skeleton of the Pleistocene Bison latifrons, also known as the giant bison or long-horned bison †Bison latifrons
* Blarina
   * †Blarina brevicauda
   * †Blarina carolinensis
* †Borophagus
   * †Borophagus diversidens
   * †Borophagus hilli
   * †Borophagus pugnator
   * †Borophagus secundus – type locality for species
* Botaurus
   * †Botaurus hibbardi – type locality for species
* †Brachyopsigale
   * †Brachyopsigale dubius – type locality for species
* Bufo
   * A living Anaxyrus cognatus (formerly Bufo cognatus), or Great Plains toad †Bufo cognatus
   * †Bufo hemiophrys
   * †Bufo hibbardi
   * †Bufo marinus
   * †Bufo pliocompactilis – type locality for species
   * †Bufo valentinensis
   * †Bufo woodhousei
* †Buisnictis
   * †Buisnictis breviramus – type locality for species
   * †Buisnictis schoffi

## C

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* †Calippus
   * †Calippus large informal
   * †Calippus martini
   * †Calippus regulus
* Life restoration of the Pliocene-Holocene camel Camelops †Camelops
* Candona
   * †Candona lactea – or unidentified comparable form
   * †Candona nyensis
   * †Candona truncata
* Canis
   * †Canis armbrusteri
   * †Canis dirus
   * †Canis edwardii
   * †Canis ferox
   * †Canis latrans
   * †Canis lepophagus
* Fossilized skeleton of the Pleistocene dwarf pronghorn Capromeryx †Capromeryx
   * †Capromeryx furcifer
* †Carpocyon
   * †Carpocyon compressus
* Carychium
   * †Carychium exiguum
* Castor
   * †Castor canadensis
* †Castoroides
   * †Castoroides ohioensis – or unidentified comparable form
* †Catostomus
   * †Catostomus commersoni
* Celtis
   * †Celtis willistonii
* Life restoration of the Miocene-Pleistocene horned gopher Ceratogaulus. Robert Bruce Horsfall (1913). †Ceratogaulus
   * †Ceratogaulus hatcheri
   * †Ceratogaulus minor
* †Cervalces
   * †Cervalces scotti
* Cervus
   * †Cervus elaphus
* Chaetodipus
   * †Chaetodipus hispidus
* Chara
   * †Chara globularis – or unidentified comparable form
* Fossilized cranium of the Pliocene-Pleistocene hyena Chasmaporthetes †Chasmaporthetes
* Chelydra
   * †Chelydra serpentina
* Chrysemys
   * †Chrysemys picta
   * †Chrysemys scripta
* †Cionella
   * †Cionella lubrica
* Clethrionomys
   * †Clethrionomys gapperi
* Cnemidophorus
   * †Cnemidophorus bilobatus
   * †Cnemidophorus sexlineatus
* Coluber
   * †Coluber constrictor
* †Copemys – type locality for genus
   * †Copemys pisinnus
   * †Copemys shotwelli – type locality for species
* Fossilized skull of the Miocene pronghorn Cosoryx †Cosoryx
   * †Cosoryx furcatus
* Crotalus
   * †Crotalus viridis
* †Cryptantha
   * †Cryptantha auriculata
* Cryptotis
   * †Cryptotis adamsi
   * †Cryptotis kansasensis – type locality for species
   * †Cryptotis meadensis – type locality for species
   * †Cryptotis parva
* Cynomys
   * †Cynomys gunnisoni – or unidentified comparable form
   * †Cynomys hibbardi – type locality for species
   * A living Cynomys ludovicianus, or black-tailed prairie dog †Cynomys ludovicianus
   * †Cynomys niobrarius
   * †Cynomys spenceri
   * †Cynomys vetus – type locality for species
* Cyprideis
   * †Cyprideis littoralis
* Cyprinotus – tentative report

## D

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* Deroceras
   * †Deroceras aenigma
* Diadophis
   * †Diadophis punctatus
* Mounted fossilized skeleton of the Miocene-Pliocene horse Dinohippus †Dinohippus
   * †Dinohippus interpolatus
   * †Dinohippus leidyanus
* Dipodomys
   * †Dipodomys hibbardi – type locality for species
   * †Dipodomys ordii – or unidentified comparable form
* †Dipoides
   * †Dipoides rexroadensis – type locality for species
   * †Dipoides wilsoni – type locality for species
* Discus
   * †Discus cronkhitei
* †Domninoides
   * †Domninoides mimicus – type locality for species

## E

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* Egretta
* Elaphe – type locality for genus
   * †Elaphe kansensis – type locality for species
   * †Elaphe obsoleta
   * †Elaphe vulpina
* Emydoidea
   * †Emydoidea twentei
* Mounted fossilized skeleton of the Miocene bone-crushing dog Epicyon †Epicyon
   * †Epicyon aelurodontoides – type locality for species
   * †Epicyon haydeni
   * †Epicyon saevus
* Equus
   * †Equus conversidens
   * †Equus francisci
   * †Equus giganteus – or unidentified comparable form
   * †Equus niobrarensis
   * †Equus scotti
   * Fossilized skeleton of the Pliocene-Pleistocene horse Equus simplicidens, also known as the Hagerman horse or American zebra †Equus simplicidens
* †Eucastor
* †Euconulus
   * †Euconulus fulvus
* †Eucyon
   * †Eucyon davisi
* Eumeces
   * †Eumeces fasciatus
   * †Eumeces hixsonorum – type locality for species
   * †Eumeces obsoletus
   * †Eumeces septentrionalis
   * †Eumeces striatulus
* †Eumecoides
   * †Eumecoides hibbardi
   * †Eumecoides mylocoelus

## F

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* Felis
   * †Felis rexroadensis
* †Ferissia
   * †Ferissia fragilis – or unidentified comparable form
* Ferrissia
   * †Ferrissia rivularis
* A living Fundulus †Fundulus

## G

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* Gastrocopta
   * †Gastrocopta armifera
   * †Gastrocopta cristata
   * †Gastrocopta tappaniana
* Geochelone
* Geomys
   * †Geomys adamsi – type locality for species
   * A living Geomys bursarius, or Plains pocket gopher †Geomys bursarius
   * †Geomys jacobi – type locality for species
   * †Geomys minor
   * †Geomys quinni
   * †Geomys tobinensis
* Gerrhonotus
   * †Gerrhonotus mungerorum – type locality for species
* †Gigantocamelus
   * †Gigantocamelus spatulus
* †Gnathabelodon
   * †Gnathabelodon thorpei – type locality for species
* Mounted fossilized skeleton of the Miocene-Pleistocene elephant relative Gomphotherium †Gomphotherium
* Gopherus
* Graptemys
   * †Graptemys geographica
* Grus
   * †Grus americana
   * †Grus nannodes – type locality for species
* †Guildayomys
   * †Guildayomys hibbardi
* Gyraulus
   * †Gyraulus parvus

## H

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* Hawaiia
   * †Hawaiia miniscula
   * †Hawaiia minuscula
* Helicodiscus
   * †Helicodiscus paralellus
   * †Helicodiscus parallelus
* Helisoma
   * †Helisoma anceps
   * †Helisoma lentum
   * †Helisoma trivolvis
* Fossilized lower jaw of the Miocene-Pleistocene llama relative Hemiauchenia †Hemiauchenia
   * †Hemiauchenia macrocephala
* †Hesperoscalops
   * †Hesperoscalops rexroadi – type locality for species
   * †Hesperoscalops sewardensis – type locality for species
* †Hesperotestudo
   * †Hesperotestudo orthopygia
   * †Hesperotestudo riggsi
* Heterodon
   * †Heterodon nasicus
   * †Heterodon platyrhinos
   * †Heterodon plionasicus
* †Hibbardomys
   * †Hibbardomys fayae – type locality for species
   * †Hibbardomys marthae
   * †Hibbardomys voorhiesi
* †Hipparion
   * †Hipparion tehonense – or unidentified comparable form
* †Hippotherium
* Holbrookia
   * †Holbrookia maculata
* Life restoration of the Pleistocene armadillo relative Holmesina with a human to scale †Holmesina
   * †Holmesina septentrionalis
* Homo
   * †Homo sapiens
* †Homotherium
   * †Homotherium serum
* Hyla
   * †Hyla cinerea – or unidentified comparable form
   * †Hyla gratiosa – or unidentified comparable form
   * †Hyla squirella – or unidentified comparable form
   * †Hyla versicolor
* Life restoration of the Miocene horse Hypohippus. Heinrich Harder (1920). †Hypohippus
* †Hypolagus
   * †Hypolagus regalis – type locality for species
   * †Hypolagus ringoldensis
   * †Hypolagus vetus
   * †Hypolagus voorhiesi
* †Hystricops

## I

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* Ictalurus
   * †Ictalurus lambda
   * †Ictalurus melas
   * †Ictalurus punctatus
* Illustration of a living Ictiobus, or buffalo fish †Ictiobus
* Ilyocypris
   * †Ilyocypris bradyi
* †Ischyrocyon – tentative report

## K

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* †Kansasimys
   * †Kansasimys dubius
* Kinosternon
   * A living Kinosternon flavescens, or yellow mud turtle †Kinosternon flavescens
   * †Kinosternon subrubrum

## L

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* A living Lampropeltis getula, or eastern kingsnake Lampropeltis
   * †Lampropeltis calligaster
   * †Lampropeltis doliata
   * †Lampropeltis getulus
   * †Lampropeltis similis
* Lasiurus
   * †Lasiurus cinereus
   * †Lasiurus fossilis – type locality for species
   * †Lasiurus golliheri – type locality for species
* Lepisosteus
   * †Lepisosteus osseus
   * Illustration of a living Lepisosteus platostomus, or shortnose gar †Lepisosteus platostomus – tentative report
* Lepomis
   * †Lepomis cyanellus
   * †Lepomis humilis – or unidentified comparable form
* †Leptarctus
   * †Leptarctus mummorum – type locality for species
   * †Leptarctus woodburnei – type locality for species
   * †Leptarctus wortmani – type locality for species
* Illustration of a fossilized skull of the Oligocene-Miocene dog Leptocyon †Leptocyon
   * †Leptocyon vafer
* Lepus
   * †Lepus californicus – or unidentified comparable form
* †Longirostromeryx
* Lontra
   * †Lontra canadensis
* Lymnaea
   * †Lymnaea caperota
   * †Lymnaea humulus
   * †Lymnaea parva
* Lynx

## M

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* †Machairodus
   * †Machairodus catocopis
* Macrochelys
   * †Macrochelys temminckii
* †Macrognathomys
* †Mammut
   * †Mammut americanum
* †Mammuthus
   * Life restoration of a herd of Mammuthus columbi, or Columbian mammoths. The extent of the fur depicted is hypothetical. Charles R. Knight (1909). †Mammuthus columbi
* Martes
   * †Martes foxi – type locality for species
   * †Martes stirtoni – type locality for species
* †Martinogale
   * †Martinogale alveodens
* †Megalonyx
   * †Megalonyx jeffersonii
   * †Megalonyx leptostomus
* †Megantereon
   * †Megantereon hesperus
* †Megatylopus
   * †Megatylopus cochrani
   * †Megatylopus gigas
   * †Megatylopus matthewi
* †Menetus
   * †Menetus exacuous
* Mephitis
   * †Mephitis mephitis – tentative report
   * †Mephitis rexroadensis – type locality for species
* †Merychyus
   * †Merychyus novomexicanus
* Micropterus
   * †Micropterus punctulatus – or unidentified comparable form
* Microtus
   * †Microtus llanensis
   * †Microtus meadensis
   * †Microtus ochrogaster
   * †Microtus paroperarius – type locality for species
   * †Microtus pennsylvanicus
* Mictomys
   * †Mictomys borealis
   * †Mictomys kansasensis
   * †Mictomys meltoni
   * †Mictomys vetus
* †Minytrema – tentative report
* †Mionictis
* Musculium
   * †Musculium partineium
   * †Musculium transversum
* Mustela
   * †Mustela meltoni – type locality for species
   * †Mustela rexroadensis – type locality for species
   * †Mustela richardsonii – or unidentified comparable form
* †Mylagaulus
   * †Mylagaulus sesquipedalis – type locality for species
* Fossilized skeleton of the Pliocene-Holocene peccary Mylohyus †Mylohyus
   * †Mylohyus fossilis
* Myotis

## N

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* Partial fossilized mandible of the Miocene-Pliocene horse Nannippus †Nannippus
   * †Nannippus lenticularis
   * †Nannippus peninsulatus
* †Nassella
   * †Nassella pohlii
   * †Nassella reynoldsii
* †Nebraskomys
   * †Nebraskomys mcgrewi
   * †Nebraskomys rexroadensis
* †Nekrolagus
   * †Nekrolagus progressus – type locality for species
* Neofiber
   * †Neofiber leonardi – type locality for species
* Neogale
   * †Neogale frenata – or unidentified comparable form
   * †Neogale vison
* Life restoration of a herd of Neohipparion. Robert Bruce Horsfall (1913). †Neohipparion
   * †Neohipparion affine – or unidentified comparable form
   * †Neohipparion eurystyle
   * †Neohipparion leptode
   * †Neohipparion trampasense
* Neotoma
   * †Neotoma floridana – or unidentified comparable form
   * †Neotoma leucopetrica
   * †Neotoma micropus
   * †Neotoma quadriplicata – type locality for species
   * †Neotoma sawrockensis – type locality for species
   * †Neotoma taylori – type locality for species
* Nerodia
   * †Nerodia hillmani
   * †Nerodia sipedon
* †Nerterogeomys
   * †Nerterogeomys smithi
* Nesovitrea
   * †Nesovitrea electrina
* Nettion
   * †Nettion ogallalae – type locality for species
* †Nimravides
   * †Nimravides thinobates
* Life restoration of the Pleistocene ground sloth Nothrotheriops †Nothrotheriops
   * †Nothrotheriops texanus
* Notiosorex
   * †Notiosorex crawfordi
   * †Notiosorex jacksoni – type locality for species
* †Notolagus
   * †Notolagus lepusculus – type locality for species
* †Notropes
* †Notropis – tentative report

## O

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* A living Odocoileus deer Odocoileus
* Ogmodontomys
   * †Ogmodontomys poaphagus – type locality for species
   * †Ogmodontomys sawrockensis – type locality for species
* †Ogmophis
   * †Ogmophis pliocompactus – type locality for species
* Ondatra
   * †Ondatra annectens
   * †Ondatra idahoensis
   * †Ondatra meadensis
   * †Ondatra zibethicus
* Onychomys
   * †Onychomys gidleyi – type locality for species
   * †Onychomys hollisteri – type locality for species
   * †Onychomys leucogaster – or unidentified comparable form
   * †Onychomys martini
   * †Onychomys pedroensis
* Ophisaurus
   * †Ophisaurus attenuatus
* A living Ortalis, or chachalaca Ortalis
   * †Ortalis affinis – type locality for species
* Oryzomys
   * †Oryzomys palustris

## P

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* †Paenemarmota
   * †Paenemarmota barbouri
   * †Paenemarmota sawrockensis
* †Paleoheterodon
* †Panicum
   * †Panicum elegans
* Panthera
   * †Panthera leo
* †Paracryptotis
   * †Paracryptotis rex – type locality for species
* Fossilized skeleton of the Pliocene-Pleistocene ground sloth Paramylodon †Paramylodon
   * †Paramylodon harlani
* †Paranasua – or unidentified comparable form
* †Parapliosaccomys
   * †Parapliosaccomys hibbardi
* †Pediomeryx
   * †Pediomeryx hemphillensis
* †Peraceras
* Perca
   * †Perca flavescens
* A living Perognathus pocket mouse Perognathus
   * †Perognathus coquorum – or unidentified comparable form
   * †Perognathus dunklei – type locality for species
   * †Perognathus gidleyi
   * †Perognathus mclaughlini – type locality for species
   * †Perognathus pearlettensis – type locality for species
   * †Perognathus rexroadensis – type locality for species
* Peromyscus
   * †Peromyscus baumgartneri – type locality for species
   * †Peromyscus berendsensis
   * †Peromyscus cochrani – type locality for species
   * †Peromyscus cragini
   * †Peromyscus kansasensis – type locality for species
   * †Peromyscus progressus – type locality for species
* †Petenyia
   * †Petenyia concisa
* Phenacomys
   * †Phenacomys intermedius – or unidentified comparable form
* Phrynosoma
   * A living Phrynosoma cornutum, or Texas horned lizard †Phrynosoma cornutum
* Physa
   * †Physa anatina
   * †Physa arboreus
   * †Physa gyrina
   * †Physa hawni
* Pisidium
   * †Pisidium abditum
   * †Pisidium compressum
   * †Pisidium noveboracense
* Pituophis
   * †Pituophis catenifer
   * †Pituophis melanoleucus
* †Planisorex
   * †Planisorex dixonensis
* †Planorbula
   * †Planorbula campestris
* Mounted fossilized skeleton of the Miocene elephant relative Platybelodon †Platybelodon
   * †Platybelodon loomisi
* †Platygonus
   * †Platygonus bicalcaratus
   * †Platygonus compressus – or unidentified comparable form
   * †Platygonus pollenae
   * †Platygonus vetus – or unidentified comparable form
* Plegadis – or unidentified comparable form
* †Pleiolama
   * †Pleiolama vera – type locality for species
* †Plesiogulo
   * †Plesiogulo marshalli – type locality for species
* †Plioctomys
   * †Plioctomys rinkeri
* †Pliogyps – type locality for genus
   * †Pliogyps fisheri – type locality for species
* Fossilized skull of the Miocene horse Pliohippus †Pliohippus
   * †Pliohippus nobilis – type locality for species
   * †Pliohippus pernix
* †Pliolemmus
   * †Pliolemmus antiquus – type locality for species
* †Pliophenacomys
   * †Pliophenacomys dixonensis – type locality for species
   * †Pliophenacomys finneyi
   * †Pliophenacomys meadensis
   * †Pliophenacomys osborni
   * †Pliophenacomys primaevus – type locality for species
* †Pliopicus – type locality for genus
   * †Pliopicus brodkorbi – type locality for species
* †Pliotaxidea
   * †Pliotaxidea nevadensis
* †Pomoxis
* †Potamocypris
* †Pratifelis
   * †Pratifelis martini – type locality for species
* †Pratilepus
   * †Pratilepus kansasensis – type locality for species
* †Procamelus
* †Procastoroides
   * †Procastoroides sweeti
* Procyon
   * †Procyon lotor
   * †Procyon rexroadensis – type locality for species
* †Prodipodomys
   * †Prodipodomys centralis
   * †Prodipodomys griggsorum
   * †Prodipodomys kansensis
   * †Prodipodomys tiheni
* †Prodipoides
   * †Prodipoides phillisi – type locality for species
* †Prolappula
   * †Prolappula verrucosa
* †Prolithospermum
   * †Prolithospermum johnstonii
* †Prosthennops
   * †Prosthennops serus – type locality for species
* Fossilized skeleton of the Miocene horse Protohippus †Protohippus
   * †Protohippus gidleyi
   * †Protohippus supremus
* †Protolabis
* Pseudacris
   * †Pseudacris clarki – or unidentified comparable form
   * †Pseudacris triseriata
* Pseudemys
   * †Pseudemys hibbardi
* †Pseudhipparion
* †Pseudoceras
   * †Pseudoceras skinneri
* Puma
   * †Puma concolor
* Pupilla
   * †Pupilla sinistra
* Pupoides
   * †Pupoides marginatus

## R

* A
* B
* C
* D
* E
* F
* G
* H
* I
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* K
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* M
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* P
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* Life restoration of the Miocene-Pliocene pronghorn Ramoceros and Cosoryx. Robert Bruce Horsfall (1913). †Ramoceros
   * †Ramoceros osborni
* †Rana
   * †Rana areolata – or unidentified comparable form
   * †Rana bucella
   * †Rana catesbeiana
   * †Rana fayeae
   * †Rana parvissima
   * †Rana pipiens
   * †Rana rexroadensis
* †Regina
   * †Regina grahami
* Reithrodontomys
   * †Reithrodontomys humulis
   * †Reithrodontomys megalotis
   * †Reithrodontomys montanus – or unidentified comparable form
   * †Reithrodontomys moorei
   * †Reithrodontomys pratincola – type locality for species
   * †Reithrodontomys rexroadensis – type locality for species
   * †Reithrodontomys wetmorei – type locality for species
* Rhinocheilus – tentative report
   * †Rhinocheilus lecontei
* Restoration of the Miocene-Pliocene elephant relative Rhynchotherium †Rhynchotherium

## S

* A
* B
* C
* D
* E
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* H
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* †Satherium
   * †Satherium piscinarium
* Scalopus
   * †Scalopus aquaticus
* A living Scaphiopus, or North American spadefoot toad Scaphiopus
   * †Scaphiopus hardeni
* Sceloporus
   * †Sceloporus robustus – type locality for species
   * †Sceloporus undulatus
* †Semotilus
   * †Semotilus atromaculatus – or unidentified comparable form
* Sigmodon
   * †Sigmodon curtisi – or unidentified comparable form
   * †Sigmodon minor
* Sistrurus
   * †Sistrurus catenatus
* Life restoration of the Pleistocene-Holocene saber-tooth cat Smilodon †Smilodon
* †Soergelia
   * †Soergelia mayfieldi – or unidentified comparable form
* Sorex
   * †Sorex arcticus
   * †Sorex cinereus
   * †Sorex cudahyensis
   * †Sorex kansasensis – type locality for species
   * †Sorex lacustris
   * †Sorex leahyi – type locality for species
   * †Sorex megapalustris
   * †Sorex palustris
   * †Sorex pratensis
   * †Sorex rexroadensis – type locality for species
   * †Sorex sandersi – type locality for species
   * †Sorex scottensis – type locality for species
   * †Sorex taylori – type locality for species
* Spea
   * A living Spea bombifrons, or plains spadefoot toad †Spea bombifrons
   * †Spea diversus
* Spermophilus
   * †Spermophilus boothi
   * †Spermophilus cragini – type locality for species
   * †Spermophilus franklinii – or unidentified comparable form
   * †Spermophilus fricki
   * †Spermophilus howelli – type locality for species
   * †Spermophilus lorisrusselli – type locality for species
   * †Spermophilus meadensis – type locality for species
   * †Spermophilus rexroadensis – type locality for species
   * †Spermophilus richardsonii
   * †Spermophilus tridecemlineatus
* Sphaerium
   * †Sphaerium simile
* Spilogale
   * †Spilogale putorius
   * †Spilogale rexroadi – type locality for species
* Stagnicola
   * †Stagnicola caperata
* Mounted fossilized skeleton of the Pliocene-Pleistocene elephant relative Stegomastodon †Stegomastodon
   * †Stegomastodon mirificus
   * †Stegomastodon primitivus
* †Stenotrema
   * †Stenotrema leai
* Sternotherus
   * †Sternotherus odoratus
* Storeria
   * †Storeria dekayi – or unidentified comparable form
* Succinea
   * †Succinea ovalis
* †Succinia
   * †Succinia concordalis
   * †Succinia haydeni
* Sylvilagus
   * A living Sylvilagus floridanus, or eastern cottontail †Sylvilagus floridanus
* †Symmetrodontomys
   * †Symmetrodontomys simplicidens – type locality for species
* Synaptomys
   * †Synaptomys australis

## T

* A
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* M
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* Y
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* Tapirus
   * †Tapirus veroensis
* Taxidea
   * †Taxidea taxus
* Mounted fossilized skeleton of the Miocene-Pliocene rhinoceros Teleoceras †Teleoceras
   * †Teleoceras fossiger – type locality for species
   * †Teleoceras guymonense
* Terrapene
   * †Terrapene carolina
   * †Terrapene ilanensis
* †Texasophis
   * †Texasophis wilsoni – type locality for species
* †Texoceros
   * †Texoceros guymonensis – or unidentified comparable form
* Thamnophis
   * †Thamnophis proximus
   * A living Thamnophis radix, or plains garter snake †Thamnophis radix
   * †Thamnophis saurita – or unidentified comparable form
   * †Thamnophis sirtalis
* Thomomys
   * †Thomomys talpoides
* Trachemys
   * †Trachemys scripta
* †Tregobatrachus – type locality for genus
   * †Tregobatrachus hibbardi – type locality for species
* †Tregophis – type locality for genus
   * †Tregophis brevirachis – type locality for species
* †Tregosorex
   * †Tregosorex holmani – type locality for species
* †Trigonictis
   * †Trigonictis macrodon
* Trionyx
   * †Trionyx spinifer
* Tropidoclonion
   * †Tropidoclonion lineatum
* A living Tympanuchus, or prairie chicken Tympanuchus – or unidentified comparable form

## U

* A
* B
* C
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* M
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* †Untermannerix
   * †Untermannerix copiosus
* Urocyon
   * A living Urocyon cinereoargenteus, or gray fox †Urocyon cinereoargenteus
   * †Urocyon progressus
* †Ustatochoerus
   * †Ustatochoerus medius

## V

* A
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* M
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* P
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* U
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* X
* Y
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* Vallonia
   * †Vallonia gracilicosta
   * †Vallonia pulchella
* Valvata
   * †Valvata tricarinata
* Vertigo
   * †Vertigo ovata
* Vulpes
   * A living Vulpes velox, or swift fox †Vulpes velox

## Z

* A
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* M
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* Zapus
   * †Zapus burti – type locality for species
   * A living Zapus hudsonius, or meadow jumping mouse †Zapus hudsonius
   * †Zapus rinkeri – type locality for species
   * †Zapus sandersi – type locality for species
* Zonitoides
   * †Zonitoides arboreus
   * †Zonitoides nitidus
