List of the prehistoric life of Kansas

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

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

• Life restoration of the Early Devonian-Permian "spiny shark" Acanthodes †Acanthodes
• †Achistrum
• †Acitheca
• †Acrodus – tentative report
• †Acroplous
• †Actiobates – type locality for genus
  • †Actiobates peabodyi – type locality for species
• †Agassizodus
  • †Agassizodus variabilis
• †Aglaocrinus
• †Alethopteris
  • †Alethopteris grandini
  • †Alethopteris serlii
• Ammodiscus – tentative report
• †Amphiscapha
• † Ananias – tentative report
• †Annularia
  • †Annularia asteris
  • †Annularia mucronata
• †Aphlebia
• Archaeolithophyllum
• Life restoration of the Carboniferous synapsid (mammal precursor) Archaeovenator †Archaeovenator – type locality for genus
  • †Archaeovenator hamiltonensis – type locality for species
• †Archimylacris
• †Aristoceras
• †Artisia
• †Asterotheca
  • †Asterotheca miltoni – or unidentified comparable form
• †Aviculopecten
  • †Aviculopecten arctisulcatus
  • †Aviculopecten mccoyi – type locality for species
  • †Aviculopecten nodocosta
  • †Aviculopecten occidentalis
  • †Aviculopecten peculiaris – type locality for species
  • †Aviculopecten sumnerensis – type locality for species
• Restoration of the Carboniferous Chimaera relative Belantsea †Belantsea – or unidentified comparable form
• †Bellerophon
  • †Bellerophon graphicus – type locality for species
• †Blattoidea
• †Botryococcus
  • †Botryococcus braunii
• †Calamites
  • †Calamites cistii
• †Callipteris
  • †Callipteris conferta
  • †Callipteris lyratifolia – tentative report
• †Carbonita – tentative report
• Life restoration of the Carboniferous Chimaera relative Caseodus †Caseodus
  • †Caseodus eatoni
• †Chomatodus
• †Chonetes
  • †Chonetes mesoloba
• †Cladodus
• Cladophlebis
• †Cleiothyridina
  • †Cleiothyridina orbicularis
• †Composita
  • †Composita elongata
  • †Composita ovata
  • †Composita subtilita
• †Cordaicarpus
• †Cordaites
  • †Cordaites principalis
• Fossil of the Carboniferous shark Ctenacanthus †Ctenacanthus
  • †Ctenacanthus amblyxiphias
• †Cyathus
• †Cyclopteris
• †Cystodictya
• †Dentalium
• †Diplichnites
  • †Diplichnites gouldi
• †Ductilodon – type locality for genus
• †Dunbaria – type locality for genus
• †Echinaria
• †Edestus
  • †Edestus heinrichi – or unidentified comparable form
• †Edmondia
• Life restoration of the Carboniferous synapsid (mammal precursor) Eocasea †Eocasea – type locality for genus
  • †Eocasea martini – type locality for species
• †Eoscopus – type locality for genus
  • †Eoscopus lockardi – type locality for species
• †Euconcordia – type locality for genus
• †Fenestella
• †Fusulina
• †Geinitzina
• †Gervillia
• †Glenopteris
• †Glikmanius
  • †Glikmanius occidentalis
• †Glyptopleura
• †Gordia
• †Helminthopsis
• †Hybodus
• Restoration of the Carboniferous synapsid (mammal precursor) Ianthasaurus †Ianthasaurus – type locality for genus
  • †Ianthasaurus hardestiorum – type locality for species
• †Ianthodon – type locality for genus
  • †Ianthodon schultzei – type locality for species
• †Isogramma
• †Janassa
• †Kawichthys – type locality for genus
  • †Kawichthys moodiei – type locality for species
• †Kennedya – type locality for genus
• †Kirkella
• †Kouphichnium
• †Lepidodendron
• †Lingula
• †Lisca – type locality for genus
• †Lissodus
• Restoration of the Carboniferous-Early Triassic cartilaginous fish Listracanthus †Listracanthus
• Lithophaga
• †Lysorophus
• †Meganeuropsis – type locality for genus
  • †Meganeuropsis permiana – type locality for species
• †Megatypus – type locality for genus
• †Metacoceras
• †Minilya
• †Misthodotes – type locality for genus
• †Modiolus
• †Naticopsis
• †Neoaganides
• †Neospirifer
  • †Neospirifer cameratus
  • †Neospirifer dunbari
  • †Neospirifer kansasensis
• †Neuropteris
  • †Neuropteris auriculata – tentative report
  • †Neuropteris odontopteroides
  • †Neuropteris ovata
  • †Neuropteris scheuchzeri
• †Noeggerathia
• †Norwoodia
• Nucula
• Life restoration of the Carboniferous-Permian synapsid (mammal precursor) Ophiacodon †Ophiacodon – type locality for genus
  • †Ophiacodon hilli – type locality for species
• †Orodus
• †Orthacanthus
• †Palaeoniscus
• †Paleolimulus – type locality for genus
• †Pecopteris
  • †Pecopteris hemitelioides
  • †Pecopteris unita
• †Petalodus
• †Petrolacosaurus – type locality for genus
  • †Petrolacosaurus kansensis – type locality for species
• †Phillipsia – tentative report
• Fossilized shell of the Silurian-Early Triassic sea snail Platyceras †Platyceras
• †Platysomus
• Pleurotomaria
• †Samaropsis
• †Sandalodus – or unidentified comparable form
• †Sigillaria
  • †Sigillaria brardii
• †Sphenophyllum
  • †Sphenophyllum oblongifolium
  • †Sphenophyllum stoukenbergi – or unidentified comparable form
  • †Sphenophyllum thonii – or unidentified comparable form
• †Sphenopteris
• Restoration of the Carboniferous reptile Spinoaequalis †Spinoaequalis – type locality for genus
• †Spirifer
  • †Spirifer rockymontanus – tentative report
• Spirorbis
• †Stemmatodus
• †Streptognathodus
  • †Streptognathodus zethus
• †Syringopora
• †Tetrataxis
• †Therates – type locality for genus
• †Treptichnus
• †Undichna
  • †Undichna britannica
  • †Undichna simplicitas
• †Urba – type locality for genus
• Fossilized foliage of the Carboniferous-Permian conifer Walchia †Walchia
• †Wilkingia
• †Worthenia
• †Xyrospondylus
• Yoldia

• Fossilized shell of the Late Cretaceous ammonoid cephalopod Acanthoscaphites †Acanthoscaphites – tentative report
  • †Acanthoscaphites reesidei
• †Alzadasaurus – type locality for genus
• †Ampullina
• †Anomia
• †Apateodus
• †Apatornis
  • †Apatornis celer – type locality for species
• †Apsopelix
  • †Apsopelix anglicus
• Aralia
• Arundo
• †Asplenium
• †Aviculopecten
  • †Aviculopecten occidentalis
• Fossilized shell of the Late Cretaceous ammonoid cephalopod Baculites †Baculites
  • †Baculites clinolobatus
  • †Baculites compressus
  • †Baculites grandis
  • †Baculites ovatus
  • †Baculites pseudovatus – type locality for species
• †Bananogmius
• †Baptornis – type locality for genus
  • †Baptornis advenus – type locality for species
• Botula
  • †Botula carolinensis
• Life restoration of the Late Cretaceous plesiosaur Brachauchenius hunting a hesperornithiform bird †Brachauchenius – type locality for genus
  • †Brachauchenius lucasi – type locality for species
• Brachidontes
• Cadulus
• †Calycoceras
• Carcharias
• Cardita
• †Cassiope
• †Ceratophyllum
• Chiloscyllium
• †Chondrites
• †Cimolichthys
  • †Cimolichthys nepaholica
• Cladophlebis
• †Claosaurus
  • †Claosaurus agilis – type locality for species
• Life restoration of the Late Cretaceous mosasaurid Clidastes †Clidastes
  • †Clidastes liodontus
  • †Clidastes velox
• Cliona
• †Collignoniceras
  • †Collignoniceras woollgari
• †Coniasaurus
• Corbula
• Crassostrea
• †Cretolamna
  • †Cretolamna appendiculata
• Restoration of the Late Cretaceous shark Cretoxyrhina, or the Ginsu shark †Cretoxyrhina
  • †Cretoxyrhina mantelli
• Ctenochelys
• Cucullaea
• †Cycadeoidea
• †Dakotasuchus – type locality for genus
  • †Dakotasuchus kingi – type locality for species
• †Dawndraco – type locality for genus
  • †Dawndraco kanzai – type locality for species
• †Desmatochelys
• †Discoscaphites
• †Dolichorhynchops – type locality for genus
  • †Dolichorhynchops osborni – type locality for species
• †Durania
• †Ectenosaurus
  • †Ectenosaurus clidastoides
• Life restoration of the Late Cretaceous plesiosaur Elasmosaurus with an anachronistic human to scale †Elasmosaurus – type locality for genus
  • †Elasmosaurus nobilis – type locality for species
  • †Elasmosaurus platyurus – type locality for species
  • †Elasmosaurus sternbergi – type locality for species
• †Enchodus
  • †Enchodus gladiolus
  • †Enchodus petrosus
• †Euspira
• †Fagus
• †Gegania
• †Gervillia
  • †Gervillia mudgeana
  • †Gervillia mudgenana
• Restoration of the Late Cretaceous bony fish Gillicus †Gillicus
  • †Gillicus arcuatus
• Gleichenia
• †Globidens
• †Gryphaea
  • †Gryphaea corrugata
  • †Gryphaea hilli
  • †Gryphaea mucronata
  • †Gryphaea navia
• †Halisaurus
  • †Halisaurus sternbergi – type locality for species
• Life restoration of the Late Cretaceous toothed bird Hesperornis †Hesperornis – type locality for genus
  • †Hesperornis crassipes – type locality for species
  • †Hesperornis gracilis – type locality for species
  • †Hesperornis regalis – type locality for species
• †Heteroceras
• †Hierosaurus – type locality for genus
• †Hoploscaphites
  • †Hoploscaphites nicolletii
• †Iaceornis
  • †Iaceornis marshi – type locality for species
• †Ichthyornis – type locality for genus
  • †Ichthyornis dispar – type locality for species
• Fossilized shell of the Early Jurassic-Late Cretaceous marine bivalve Inoceramus with a human indicating its size †Inoceramus
  • †Inoceramus cuvieri
  • †Inoceramus ginterensis
  • †Inoceramus tenuistriatus – tentative report
• †Ischyrhiza
  • †Ischyrhiza mira
• †Jeletzkytes
  • †Jeletzkytes nodosus
• †Leiosphaeridia
• †Leptostyrax
• †Linearis
• †Lingula
• Linuparus
• Lopha
• †Magnoavipes
• Marsilea
• †Mathilda
• Fossilized skull of the Late Cretaceous plesiosaur Megacephalosaurus †Megacephalosaurus – type locality for genus
  • †Megacephalosaurus eulerti – type locality for species
• Membranipora
• †Modiolus
• †Niobrarasaurus
  • †Niobrarasaurus coleii – type locality for species
• †Niobrarateuthis
  • †Niobrarateuthis bonneri – type locality for species
  • †Niobrarateuthis walkeri – type locality for species
• Nucula
• Restoration of the Late Cretaceous pterosaur Nyctosaurus †Nyctosaurus
  • †Nyctosaurus bonneri – type locality for species
  • †Nyctosaurus gracilis – type locality for species
  • †Nyctosaurus nanus – type locality for species
• †Ogmodirus – type locality for genus
• Ostrea
• †Pachyrhizodus
  • †Pachyrhizodus caninus – or unidentified comparable form
  • †Pachyrhizodus minimus
• †Parahesperornis – type locality for genus
  • †Parahesperornis alexi – type locality for species
• †Pecten
• Pholadomya
• Pinus
• †Placenticeras
  • †Placenticeras meeki
• Platanus
• Restoration of the Late Cretaceous mosasaur Platecarpus †Platecarpus
  • †Platecarpus planifrons – type locality for species
  • †Platecarpus tympaniticus
• †Platyceramus
  • †Platyceramus platinus
• †Platypterygius – or unidentified comparable form
• †Plesiochelys
• †Plesiosaurus
• Plicatula
• Life restoration of the Late Cretaceous polycotylid plesiosaur Polycotylus giving birth †Polycotylus – type locality for genus
  • †Polycotylus latipinnis – type locality for species
• †Prisca – tentative report
• †Protocardia
• †Protosphyraena
  • †Protosphyraena tenuis
• †Protostega
• †Pseudoperna
  • †Pseudoperna congesta
• Life restoration of the Late Cretaceous pterosaur Pteranodon †Pteranodon – type locality for genus
  • †Pteranodon comptus – type locality for species
  • †Pteranodon longiceps – type locality for species
  • †Pteranodon sternbergi – type locality for species
• †Pteria
• †Pterotrigonia
• †Ptychodus
  • †Ptychodus anonymus – or unidentified comparable form
  • †Ptychodus decurrens
  • †Ptychodus mortoni
  • †Ptychodus occidentalis
  • †Ptychodus whipplei
• †Ptychotrygon
  • †Ptychotrygon triangularis
• Quercus
• †Repichnia
• Rhinobatos
  • †Rhinobatos incertus
• †Rhizocorallium
• Sassafras
• Restoration of several of the Early Cretaceous-Miocene shark Scapanorhynchus †Scapanorhynchus
  • †Scapanorhynchus rhaphiodon
• †Scaphites
• †Scolicia
• Scyliorhinus
• †Selmasaurus
  • †Selmasaurus johnsoni – type locality for species
• †Sequoia
• Serpula
• †Silvisaurus – type locality for genus
  • †Silvisaurus condrayi – type locality for species
• Squalicorax
  • †Squalicorax curvatus
  • †Squalicorax falcatus
  • †Squalicorax kaupi
  • †Squalicorax pristodontus – or unidentified comparable form
  • †Squalicorax volgensis
• Sterculia
• Animated life restoration of the Late Cretaceous plesiosaur Styxosaurus †Styxosaurus – type locality for genus
  • †Styxosaurus snowii – type locality for species
• Tellina
• †Terminonaris
• †Toxochelys
  • †Toxochelys latiremis
• Trachycardium
• †Tragodesmoceras
• †Trinacromerum – type locality for genus
  • †Trinacromerum bentonianum – type locality for species
• Turritella
• Restoration of the Late Cretaceous mosasaur Tylosaurus †Tylosaurus
  • †Tylosaurus dyspelor
  • †Tylosaurus kansasensis – type locality for species
  • †Tylosaurus proriger
• †Uintacrinus
  • †Uintacrinus socialis
• †Urenchelys
• Fish in a fish specimen †Xiphactinus
  • †Xiphactinus audax
• Yoldia

• Acris
  • †Acris crepitans
• †Adelphailurus
• Fossilized skull of the Miocene bone-crushing dog Aelurodon †Aelurodon
• Agkistrodon
• †Agriocharis
• †Agriotherium
• †Alforjas
• †Allogona
  • †Allogona profunda
• †Ambystoma
  • †Ambystoma maculatum
  • †Ambystoma tigrinum
• Life restoration of the Miocene elephant relative Amebelodon. Margret Flinsch (1932). †Amebelodon
• Amia
  • †Amia calva
• †Amphimachairodus
• Anas
  • †Anas crecca
• †Aphelops
• Aplodinotus
  • †Aplodinotus grunniens – or unidentified comparable form
• †Arctodus
  • †Arctodus pristinus – or unidentified comparable form
  • †Arctodus simus
• †Astrohippus
• Baiomys
• †Barbourofelis
• Bassariscus
• 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
• Bufo
  • †Bufo cognatus
  • †Bufo hemiophrys
  • †Bufo marinus
  • †Bufo woodhousei
• †Calippus
• Life restoration of the Pliocene-Holocene camel Camelops †Camelops
• Candona
• Canis
  • †Canis armbrusteri
  • †Canis dirus
  • †Canis edwardii
  • †Canis ferox
  • †Canis latrans
  • †Canis lepophagus
• †Capromeryx
• †Carpocyon
• Carychium
  • †Carychium exiguum
• Castor
  • †Castor canadensis
• †Castoroides
  • †Castoroides ohioensis – or unidentified comparable form
• †Catostomus
  • †Catostomus commersoni
• Celtis
• 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
• †Chasmaporthetes
• Chelydra
  • A living Chelydra serpentina, or common snapping turtle †Chelydra serpentina
• Chrysemys
  • †Chrysemys picta
• †Cionella
  • †Cionella lubrica
• Clethrionomys
  • †Clethrionomys gapperi
• Cnemidophorus
  • †Cnemidophorus sexlineatus
• Coluber
  • †Coluber constrictor
• Fossilized skull of the Miocene pronghorn Cosoryx †Cosoryx
  • †Cosoryx furcatus
• Crotalus
  • †Crotalus viridis
• †Cryptantha
• Cryptotis
  • †Cryptotis parva
• Cynomys
  • †Cynomys gunnisoni – or unidentified comparable form
  • †Cynomys ludovicianus
• Deroceras
• Diadophis
  • †Diadophis punctatus
• Mounted fossilized skeleton of the Miocene-Pliocene horse Dinohippus †Dinohippus
• Dipodomys
  • †Dipodomys ordii – or unidentified comparable form
• †Dipoides
• Discus
• Egretta
• Elaphe – type locality for genus
  • †Elaphe obsoleta
  • †Elaphe vulpina
• Emydoidea
• †Epicyon
  • †Epicyon haydeni
• 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 obsoletus
  • †Eumeces septentrionalis
• Felis
• Ferrissia
• †Fundulus
• Gastrocopta
  • †Gastrocopta armifera
• Geochelone
• Geomys
  • †Geomys bursarius
• Gerrhonotus
• †Gigantocamelus
• †Gnathabelodon
• Mounted fossilized skeleton of the Miocene-Pleistocene elephant relative Gomphotherium †Gomphotherium
• Gopherus
• Graptemys
  • †Graptemys geographica
• Grus
  • †Grus americana
• Gyraulus
  • †Gyraulus parvus
• Hawaiia
  • †Hawaiia minuscula
• Helicodiscus
  • †Helicodiscus parallelus
• Helisoma
  • †Helisoma anceps
  • †Helisoma trivolvis
• Fossilized lower jaw of the Miocene-Pleistocene llama relative Hemiauchenia †Hemiauchenia
  • †Hemiauchenia macrocephala
• †Hesperotestudo
• Heterodon
  • †Heterodon nasicus
  • †Heterodon platyrhinos
• †Hipparion
• †Hippotherium
• Holbrookia
  • †Holbrookia maculata
• Life restoration of the Pleistocene armadillo relative Holmesina with a human to scale †Holmesina
• 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
• Ictalurus
  • †Ictalurus melas
  • †Ictalurus punctatus
• †Ictiobus
• †Ischyrocyon – tentative report
• Kinosternon
  • †Kinosternon flavescens
  • †Kinosternon subrubrum
• A living Lampropeltis getula, or eastern kingsnake Lampropeltis
  • †Lampropeltis calligaster
  • †Lampropeltis getulus
• Lasiurus
  • †Lasiurus cinereus
• Lepisosteus
  • †Lepisosteus osseus
  • †Lepisosteus platostomus – tentative report
• Lepomis
  • †Lepomis cyanellus
  • †Lepomis humilis – or unidentified comparable form
• Illustration of a fossilized skull of the Oligocene-Miocene dog Leptocyon †Leptocyon
• Lepus
  • †Lepus californicus – or unidentified comparable form
• †Longirostromeryx
• Lontra
  • †Lontra canadensis
• Lymnaea
• Lynx
• †Machairodus
• Macrochelys
  • †Macrochelys temminckii
• †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
• †Megalonyx
  • †Megalonyx jeffersonii
  • †Megalonyx leptostomus
• †Megantereon
• †Megatylopus
• †Menetus
• Mephitis
  • †Mephitis mephitis – tentative report
• †Merychyus
• Micropterus
  • †Micropterus punctulatus – or unidentified comparable form
• Microtus
  • †Microtus ochrogaster
  • †Microtus pennsylvanicus
• †Minytrema – tentative report
• Musculium
  • †Musculium transversum
• Mustela
  • †Mustela richardsonii – or unidentified comparable form
• †Mylagaulus
• Fossilized skeleton of the Pliocene-Holocene peccary Mylohyus †Mylohyus
  • †Mylohyus fossilis
• Myotis
• †Nannippus
• †Nassella
• Neofiber
• Neogale
  • †Neogale frenata – or unidentified comparable form
  • †Neogale vison
• †Neohipparion
• Neotoma
  • †Neotoma floridana – or unidentified comparable form
  • †Neotoma micropus
• Nerodia
  • †Nerodia sipedon
• Nesovitrea
• †Nimravides
• Life restoration of the Pleistocene ground sloth Nothrotheriops †Nothrotheriops
• Notiosorex
  • †Notiosorex crawfordi
• †Notropis – tentative report
• Odocoileus
• Ondatra
  • †Ondatra zibethicus
• Onychomys
  • †Onychomys leucogaster – or unidentified comparable form
• Ophisaurus
  • †Ophisaurus attenuatus
• Ortalis
• Oryzomys
  • †Oryzomys palustris
• †Panicum
  • †Panicum elegans
• Panthera
  • †Panthera leo
• Fossilized skeleton of the Pliocene-Pleistocene ground sloth Paramylodon †Paramylodon
  • †Paramylodon harlani
• †Pediomeryx
• †Peraceras
• Perca
  • †Perca flavescens
• Perognathus
• Peromyscus
• Phenacomys
  • †Phenacomys intermedius – or unidentified comparable form
• Phrynosoma
  • †Phrynosoma cornutum
• Physa
• Pisidium
• Pituophis
  • †Pituophis catenifer
  • †Pituophis melanoleucus
• Mounted fossilized skeleton of the Miocene elephant relative Platybelodon †Platybelodon
• †Platygonus
  • †Platygonus compressus – or unidentified comparable form
• Plegadis – or unidentified comparable form
• †Pleiolama
• †Plesiogulo
• †Pliohippus
• †Pomoxis
• †Potamocypris
• †Pratifelis
  • †Pratifelis martini – type locality for species
• †Procamelus
• †Procastoroides
• Procyon
  • †Procyon lotor
• Fossilized skeleton of the Miocene horse Protohippus †Protohippus
• †Protolabis
• Pseudacris
  • †Pseudacris triseriata
• Pseudemys
• †Pseudhipparion
• Puma
  • †Puma concolor
• Pupilla
• Pupoides
• Life restoration of the Miocene-Pliocene pronghorn Ramoceros and Cosoryx. Robert Bruce Horsfall (1913). †Ramoceros
• †Rana
  • †Rana areolata – or unidentified comparable form
  • †Rana catesbeiana
  • †Rana pipiens
• †Rana areolata – or unidentified comparable form
  • †Rana catesbeiana
  • †Rana pipiens
• †Regina
• Reithrodontomys
  • †Reithrodontomys humulis
  • †Reithrodontomys megalotis
  • †Reithrodontomys montanus – or unidentified comparable form
• Rhinocheilus – tentative report
  • †Rhinocheilus lecontei
• Restoration of the Miocene-Pliocene elephant relative Rhynchotherium †Rhynchotherium
• †Satherium
  • †Satherium piscinarium
• Scalopus
  • †Scalopus aquaticus
• Scaphiopus
• Sceloporus
  • †Sceloporus undulatus
• †Semotilus
  • †Semotilus atromaculatus – or unidentified comparable form
• Sigmodon
• 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 palustris
• Spea
  • †Spea bombifrons
• Spermophilus
  • †Spermophilus franklinii – or unidentified comparable form
  • †Spermophilus richardsonii
  • †Spermophilus tridecemlineatus
• Sphaerium
• Spilogale
  • †Spilogale putorius
• Stagnicola
• Mounted fossilized skeleton of the Pliocene-Pleistocene elephant relative Stegomastodon †Stegomastodon
  • †Stegomastodon mirificus
• †Stenotrema
• Sternotherus
  • †Sternotherus odoratus
• Storeria
  • †Storeria dekayi – or unidentified comparable form
• Succinea
  • †Succinea ovalis
• Sylvilagus
  • †Sylvilagus floridanus
• Synaptomys
• Tapirus
  • †Tapirus veroensis
• Taxidea
  • †Taxidea taxus
• Mounted fossilized skeleton of the Miocene-Pliocene rhinoceros Teleoceras †Teleoceras
• Terrapene
  • †Terrapene carolina
• Thamnophis
  • †Thamnophis proximus
  • †Thamnophis radix
  • †Thamnophis saurita – or unidentified comparable form
  • †Thamnophis sirtalis
• Thomomys
  • †Thomomys talpoides
• Trachemys
  • A living Trachemys scripta, or pond slider †Trachemys scripta
• †Trigonictis
  • †Trigonictis macrodon
• Trionyx
• Tropidoclonion
  • †Tropidoclonion lineatum
• Tympanuchus – or unidentified comparable form
• Urocyon
  • †Urocyon cinereoargenteus
  • †Urocyon progressus
• †Ustatochoerus
• Vallonia
  • †Vallonia gracilicosta
  • †Vallonia pulchella
• Valvata
  • †Valvata tricarinata
• Vertigo
  • †Vertigo ovata
• Vulpes
  • A living Vulpes velox, or swift fox †Vulpes velox
• Zapus
  • †Zapus hudsonius
• Zonitoides
  • †Zonitoides arboreus
  • †Zonitoides nitidus

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved December 17, 2021.