List of the Cenozoic life of Nebraska

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

A
  • Acer
    • †Acer minor
  • †Achlyoscapter
  • Acipenser
  • †Aciprion
    • †Aciprion formosum
  • Acris
    • †Acris crepitans – or unidentified comparable form
  • Mounted fossilized skeleton of the Miocene horse Acritohippus
    †Acritohippus
  • †Adeloblarina – or unidentified comparable form
  • †Adjidaumo
    • †Adjidaumo intermedius – type locality for species
    • †Adjidaumo maximus – type locality for species
    • †Adjidaumo minimus
    • †Adjidaumo minutus
  • †Aelurodon
    • †Aelurodon asthenostylus
    • †Aelurodon ferox
    • †Aelurodon mcgrewi – type locality for species
    • †Aelurodon stirtoni
    • †Aelurodon taxoides
    • †Aelurodon wheelerianus – or unidentified comparable form
  • Life restoration of the Miocene camel Aepycamelus, or the long-necked camel. Heinrich Harder (1920).
    †Aepycamelus
  • Agkistrodon
    • †Agkistrodon contortix – or unidentified comparable form
  • †Agnotocastor
    • †Agnotocastor readingi – type locality for species
  • †Agriochoerus
    • †Agriochoerus antiquus
  • †Agriotherium
  • Restorative model of the Miocene deer relative Aletomeryx
    †Aletomeryx
    • †Aletomeryx gracilis – type locality for species
    • †Aletomeryx marslandensis – type locality for species
  • †Alforjas
  • †Alilepus
    • †Alilepus vagus
  • Alligator
  • †Allomys
    • †Allomys harkseni
  • †Allophaiomys
  • †Alluvisorex
    • †Alluvisorex arcadentes – or unidentified comparable form
  • A living Alnus, or alder tree
    Alnus
  • †Alphagaulus
    • †Alphagaulus tedfordi – type locality for species
    • †Alphagaulus vetus
  • †Alwoodia
    • †Alwoodia magna – or unidentified comparable form
  • †Ambrosia
  • †Ambystoma
    • †Ambystoma maculatum
    • †Ambystoma minshalli – type locality for species
    • †Ambystoma priscum – type locality for species
    • †Ambystoma tigrinum
  • Life restoration of the Miocene elephant relative Amebelodon. Margret Flinsch (1932).
    †Amebelodon
    • †Amebelodon fricki – type locality for species
  • †Ameiseophis
    • †Ameiseophis robinsoni
  • Amia
  • Ammospermophilus
    • †Ammospermophilus junturensis
  • †Amphechinus
  • †Amphicyon
  • Fossilized skull of the Miocene saber-toothed cat Amphimachairodus
    †Amphimachairodus
    • †Amphimachairodus coloradensis
  • †Anchigyps
    • †Anchigyps voorhiesi
  • †Anchitheriomys
    • †Anchitheriomys fluminis
    • †Anchitheriomys nanus
    • †Anchitheriomys stouti – type locality for species
  • †Anchitherium
  • A living Andrias giant salamander
    †Andrias
    • †Andrias matthewi – type locality for species
  • †Anilioides
    • †Anilioides nebraskensis – type locality for species
  • †Ankylodon
    • †Ankylodon annectens
  • †Antecalomys
    • †Antecalomys phthanus – type locality for species
  • †Antesorex
    • †Antesorex wilsoni – type locality for species
  • Antrozous – or unidentified comparable form
  • Apalone
  • †Apatemys
    • †Apatemys downsi – or unidentified related form
  • †Aphelops
    • †Aphelops megalodus
    • †Aphelops mutilus – type locality for species
  • †Apletotomeus
    • †Apletotomeus crassus – type locality for species
  • Aplodinotus
  • †Apternodus
  • †Aramornis
    • †Aramornis longurio – type locality for species
  • Aramus
  • †Archaeocyon
    • †Archaeocyon leptodus
    • †Archaeocyon pavidus
  • †Archaeohippus
    • †Archaeohippus penultimus – type locality for species
  • †Archaeolagus
    • †Archaeolagus primigenius – or unidentified comparable form
  • Life restoration of the Eocene-Oligocene entelodont mammal Archaeotherium
    †Archaeotherium
    • †Archaeotherium mortoni
  • †Arctodus
  • Arctomys
    • †Arctomys vetus
  • †Arctonasua
    • †Arctonasua eurybates – type locality for species
    • †Arctonasua gracilis – type locality for species
    • †Arctonasua minima – type locality for species
  • Ardea
  • †Arikareeomys
    • †Arikareeomys skinneri – type locality for species
  • Arizona
    • †Arizona voorhiesi – type locality for species
  • †Arretotherium
    • †Arretotherium acridens
    • †Arretotherium fricki – type locality for species
  • †Artemisia
  • †Astrohippus
  • Atractosteus
  • †Aulolithomys
    • †Aulolithomys bounites

B
  • Baiomys
  • Balearica
  • Fossilized skull of the Miocene-Pliocene false saber-toothed cat Barbourofelis
    †Barbourofelis
  • †Barbouromeryx
    • †Barbouromeryx trigonocorneus
  • Bassariscus
    • †Bassariscus antiquus – type locality for species
    • †Bassariscus minimus – type locality for species
    • †Bassariscus ogallalae – type locality for species
  • †Bathornis
  • †Bathygenys
  • †Bensonomys
    • †Bensonomys meadensis
  • Betula – or unidentified comparable form
  • Bison
  • †Blackia
  • †Blacktops – type locality for genus
    • †Blacktops latidens – type locality for species
    • †Blacktops longinares – type locality for species
  • Blarina
    • †Blarina brevicauda
  • †Blastomeryx
  • †Bootherium
  • †Boreortalis
    • †Boreortalis phengitis – type locality for species
  • †Borophagus
  • †Bothriodon
    • †Bothriodon americanus
  • †Bouromeryx
    • †Bouromeryx americanus
    • †Bouromeryx submilleri – type locality for species
  • Restorative portrait of the Miocene oreodont mammal Brachycrus
    †Brachycrus
    • †Brachycrus buwaldi
    • †Brachycrus siouense – type locality for species
    • †Brachycrus wilsoni – type locality for species
  • †Brachyerix
    • †Brachyerix incertis – type locality for species
    • †Brachyerix macrotis
    • †Brachyerix richi – type locality for species
  • †Brachyopsigale
    • †Brachyopsigale dubius – or unidentified comparable form
  • †Brachypsalis
    • †Brachypsalis hyaenoides – type locality for species
    • †Brachypsalis matutinus – type locality for species
    • †Brachypsalis modicus
    • †Brachypsalis obliquidens – type locality for species
    • †Brachypsalis pachycephalus
  • Skeletal reconstruction of the Eocene-Oligocene bear-dog Brachyrhynchocyon
    †Brachyrhynchocyon
    • †Brachyrhynchocyon dodgei
  • †Bretzia – tentative report
  • †Brontops
    • †Brontops brachycephalus
    • †Brontops dispar – type locality for species
  • Bufo
    • †Bufo cognatus
    • †Bufo hibbardi
    • †Bufo holmani – type locality for species
    • †Bufo kuhrei – type locality for species
    • †Bufo pliocompactilis
    • †Bufo repentinus
    • †Bufo rexroadensis
    • †Bufo spongifrons – or unidentified comparable form
    • †Bufo valentinensis – type locality for species
  • †Buisnictis
    • †Buisnictis burrowsi
    • †Buisnictis schoffi
  • Burhinus
    • †Burhinus lucorum – type locality for species
  • A living Buteo hawk
    Buteo
    • †Buteo conterminus – type locality for species
    • †Buteo typhoius

C

D
  • †Dakotaophis
    • †Dakotaophis greeni
  • †Daphoenictis
    • †Daphoenictis tedfordi
  • †Daphoenodon
    • †Daphoenodon falkenbachi
    • †Daphoenodon niobrarensis – type locality for species
    • †Daphoenodon robustum
    • †Daphoenodon superbus
  • Life restoration of the Eocene-Miocene bear dog Daphoenus
    †Daphoenus – type locality for genus
    • †Daphoenus felinus
    • †Daphoenus hartshornianus
    • †Daphoenus vetus – type locality for species
  • Dasypus
  • †Delotrochanter
    • †Delotrochanter oryktes – type locality for species
    • †Delotrochanter petersoni
  • †Desmatippus
    • †Desmatippus integer
    • †Desmatippus nebrascensis – type locality for species
    • †Desmatippus nebraskensis
    • †Desmatippus tyleri – type locality for species
  • †Desmatochoerus
    • †Desmatochoerus megalodon
  • †Desmatolagus
    • †Desmatolagus gazini – type locality for species
  • †Desmocyon
  • Restoration of the Oligocene-Miocene hornless rhinoceros Diceratherium. Robert Bruce Horsfall (1913).
    †Diceratherium
    • †Diceratherium annectens
    • †Diceratherium armatum
    • †Diceratherium niobrarense – type locality for species
    • †Diceratherium radtkei
  • Dicrostonyx
  • †Dikkomys
    • †Dikkomys matthewi – type locality for species
  • †Dinictis
    • †Dinictis felina
  • †Dinogale
    • †Dinogale siouxensis – type locality for species
  • †Dinohippus
    • †Dinohippus leidyanus – type locality for species
  • †Dinohyus
  • †Diospyros
    • †Diospyros miotexana – type locality for species
  • †Diplolophus
    • †Diplolophus insolens
  • Dipodomys
  • †Dipoides
    • †Dipoides rexroadensis
    • †Dipoides stirtoni
    • †Dipoides tanneri – type locality for species
    • †Dipoides williamsi
    • †Dipoides wilsoni – or unidentified comparable form
  • †Diprionomys
    • †Diprionomys agrarius – type locality for species
  • †Domnina
    • †Domnina dakotensis
    • †Domnina gradata
    • †Domnina thompsoni
  • †Domninoides
    • †Domninoides mimicus
    • †Domninoides valentinensis – type locality for species
  • †Douglassciurus
    • †Douglassciurus jeffersoni
  • †Downsimus
    • †Downsimus chadwicki
  • †Drepanomeryx
    • †Drepanomeryx falciformis – type locality for species
  • Fossilized horns, jaws, and limb bones of the Miocene deer relative Dromomeryx
    †Dromomeryx

E
  • †Ecclesimus
    • †Ecclesimus tenuiceps
  • †Ectopocynus
    • †Ectopocynus simplicidens – type locality for species
  • †Ectypodus
    • †Ectypodus lovei
  • †Edaphocyon
    • †Edaphocyon lautus – type locality for species
  • †Ekgmowechashala
  • Elaphe
  • Life restoration of the Eocene-Oligocene anthracothere mammal Elomeryx
    †Elomeryx – tentative report
  • Emydoidea
  • †Enhydrocyon
    • †Enhydrocyon pahinsintewakpa
  • †Entoptychus
    • †Entoptychus grandiplanus – type locality for species
  • †Eotylopus
    • †Eotylopus reedi
  • †Epeiromys
    • †Epeiromys spanius – type locality for species
  • Mounted fossilized skeleton of the Miocene bone-crushing dog Epicyon
    †Epicyon
  • Equus
  • Erethizon
    • †Erethizon dorsatum
  • Esox
  • Life restoration of the Miocene elephant relative Eubelodon
    †Eubelodon
    • †Eubelodon morrilli
  • †Eucastor
    • †Eucastor tortus
  • †Eucyon
    • †Eucyon davisi
    • †Eucyon skinneri – type locality for species
  • †Euhapsis
    • †Euhapsis breugerorum – type locality for species
    • †Euhapsis ellicottae – type locality for species
    • †Euhapsis platyceps – type locality for species
  • A living Eumeces skink
    Eumeces
    • †Eumeces antiquus – type locality for species
    • †Eumeces minimus
    • †Eumeces striatulatus – or unidentified comparable form
  • †Eumys
    • †Eumys brachyodus
    • †Eumys elegans
    • †Eumys parvidens – type locality for species
  • †Euoplocyon
    • †Euoplocyon brachygnathus
  • †Euroxenomys
    • †Euroxenomys wilsoni
  • †Eutypomys
    • †Eutypomys thomsoni

F
  • †Fanimus
    • †Fanimus ultimus – type locality for species
  • Felis
    • †Felis rexroadensis – or unidentified comparable form
  • †Florentiamys
    • †Florentiamys tiptoni
  • †Floridatragulus
  • †Fossorcastor
    • †Fossorcastor greeni – type locality for species
  • Illustrations of the flowers and foliage of a living Fraxinus, or ash tree, with insets further detailing its anatomy
    †Fraxinus
    • †Fraxinus coulteri

G
  • A living Gaillardia, or blanket flower
    †Gaillardia
    • †Gaillardia thomsoni – type locality for species
  • †Galbreathia
    • †Galbreathia bettae
    • †Galbreathia novellus
  • †Galushaceras – type locality for genus
    • †Galushaceras levellorum – type locality for species
  • Geochelone
    • †Geochelone nordensis – type locality for species
    • †Geochelone oelrichi
  • Geomys
    • †Geomys bursarius
    • †Geomys lutescens
    • †Geomys quinni
    • †Geomys tobinensis – or unidentified comparable form
  • A living Geranoaetus bird of prey
    Geranoaetus
    • †Geranoaetus contortus
  • †Geringia
    • †Geringia mcgregori
  • †Geringophis
    • †Geringophis depressus
    • †Geringophis vetus – type locality for species
    • †Geringophis yatkolae – type locality for species
  • Gerrhonotus
    • †Gerrhonotus mungerorum – or unidentified comparable form
  • †Gigantocamelus
    • †Gigantocamelus spatulus – type locality for species
  • Glyptemys
    • †Glyptemys valentinensis – type locality for species
  • †Glyptosaurus
  • †Goinophis – type locality for genus
    • †Goinophis minusculus – type locality for species
  • Mounted fossilized skeleton of the Miocene-Pleistocene elephant relative Gomphotherium
    †Gomphotherium
    • †Gomphotherium productum – type locality for species
  • †Goniodontomys
    • †Goniodontomys disjunctus
  • Gopherus
    • †Gopherus laticuneus
  • Graptemys
  • †Gregorymys
    • †Gregorymys formosus
  • †Gripholagomys
    • †Gripholagomys lavocati
  • Grus
    • †Grus pratensis
  • †Guildayomys
    • †Guildayomys hibbardi – type locality for species

H
  • †Harrisonsaurus – type locality for genus
    • †Harrisonsaurus fossilis – type locality for species
  • †Harrymys
    • †Harrymys magnus
  • Life restoration of the Pleistocene pronghorn Hayoceros
    †Hayoceros
    • †Hayoceros barbouri – type locality for species
  • †Helagras
    • †Helagras orellanensis – type locality for species
  • †Heliscomys
    • †Heliscomys hatcheri
    • †Heliscomys macdonaldi – type locality for species
    • †Heliscomys mcgrewi – type locality for species
    • †Heliscomys vetus
  • †Helodermoides
  • †Hemiauchenia
  • †Heptacodon
    • †Heptacodon occidentale – or unidentified comparable form
  • †Herpetotherium
  • †Hesperhys
    • †Hesperhys vagrans
  • Life restoration of the Eocene-Oligocene dog Hesperocyon. Robert Bruce Horsfall (1913).
    †Hesperocyon
    • †Hesperocyon gregarius
  • †Hesperolagomys
    • †Hesperolagomys fluviatilis
    • †Hesperolagomys galbreathi – or unidentified comparable form
  • †Hesperoscalops
    • †Hesperoscalops mcgrewi
  • †Hesperotestudo
    • †Hesperotestudo angusticeps – type locality for species
    • †Hesperotestudo orthopygia
  • Heterodon
  • †Heteromeryx
    • †Heteromeryx dispar
  • †Hibbardomys
    • †Hibbardomys marthae – type locality for species
    • †Hibbardomys skinneri – type locality for species
    • †Hibbardomys voorhiesi – type locality for species
  • †Hipparion
  • †Hippotherium
  • †Hitonkala
    • †Hitonkala macdonaldtau – type locality for species
  • Holbrookia – tentative report
    • †Holbrookia antiqua – type locality for species
  • Restoration of Pliocene-Pleistocene Homotherium, or scimitar cat
    †Homotherium
  • †Hoplophoneus
    • †Hoplophoneus mentalis
    • †Hoplophoneus primaevus
  • †Hyaenodon
  • Hyla
  • †Hypertragulus
    • †Hypertragulus calcaratus
    • †Hypertragulus chadronensis – type locality for species
    • †Hypertragulus crawfordensis – type locality for species
    • †Hypertragulus minor – type locality for species
    • †Hypertragulus quadratus – type locality for species
    • †Hypertragulus sequens – type locality for species
  • †Hypisodus
    • †Hypisodus alacer
    • †Hypisodus ironsi – type locality for species
    • †Hypisodus minimus
    • †Hypisodus paululus – type locality for species
    • †Hypisodus retallacki – type locality for species
  • Life restoration of the Miocene horse Hypohippus. Heinrich Harder (1920).
    †Hypohippus
    • †Hypohippus affinis
    • †Hypohippus osborni
    • †Hypohippus pertinax – or unidentified comparable form
  • †Hypolagus
    • †Hypolagus fontinalis
    • †Hypolagus furlongi
    • †Hypolagus parviplicatus
    • †Hypolagus regalis
    • †Hypolagus ringoldensis
    • †Hypolagus vetus
    • †Hypolagus voorhiesi
  • †Hypsiops
    • †Hypsiops breviceps
  • Life restoration of the Eocene-Oligocene odd-toed ungulate Hyracodon. Charles R. Knight (1896).
    †Hyracodon
    • †Hyracodon leidyanus
    • †Hyracodon nebraskensis
  • †Hystricops
    • †Hystricops venustus

I
  • Ictalurus
    • †Ictalurus echinatus
    • †Ictalurus lambda
    • †Ictalurus leidyi – or unidentified comparable form
    • †Ictalurus punctatus – or unidentified comparable form
  • †Idiogenomys – type locality for genus
    • †Idiogenomys ozziei – type locality for species
  • Ilex
  • Fossilized skull of the Miocene bear Indarctos
    †Indarctos
    • †Indarctos oregonensis
  • †Ischyrocyon
  • †Ischyromys
    • †Ischyromys douglassi
    • †Ischyromys typus
    • †Ischyromys veterior

J
  • †Jimomys
    • †Jimomys labaughi – type locality for species
  • Juglans

K

L
  • †Lambdoceras
    • †Lambdoceras siouxensis
  • A living Lampropeltis getula, or eastern kingsnake
    Lampropeltis
  • †Lantanotherium
    • †Lantanotherium observatum – type locality for species
  • Lasiurus
  • †Leidymys
    • †Leidymys blacki
    • †Leidymys cerasus – type locality for species
  • Leiocephalus
    • †Leiocephalus nebraskensis
    • †Leiocephalus septentrionalis – type locality for species
  • †Lemoynea
    • †Lemoynea biradicularis – type locality for species
  • Illustration of a living Lepisosteus, or gar
    Lepisosteus
  • †Lepoides
    • †Lepoides lepoides – type locality for species
  • Lepomis
  • †Leptarctus
    • †Leptarctus martini – type locality for species
    • †Leptarctus oregonensis
    • †Leptarctus primus
    • †Leptarctus wortmani – type locality for species
  • †Leptauchenia
    • †Leptauchenia decora
    • †Leptauchenia major
  • †Leptochoerus
    • †Leptochoerus elegans
    • †Leptochoerus emilyae
    • †Leptochoerus spectabilis
    • †Leptochoerus supremus
  • Illustration of a fossilized skull of the Oligocene-Miocene dog Leptocyon
    †Leptocyon
    • †Leptocyon gregorii – or unidentified comparable form
    • †Leptocyon leidyi – type locality for species
    • †Leptocyon matthewi – type locality for species
    • †Leptocyon vafer
    • †Leptocyon vulpinus
  • †Leptodontomys
    • †Leptodontomys douglassi
    • †Leptodontomys stirtoni – or unidentified comparable form
  • Life restoration of the Eocene-Oligocene even-toed ungulate Leptomeryx
    †Leptomeryx
    • †Leptomeryx elissae – type locality for species
    • †Leptomeryx esulcatus
    • †Leptomeryx evansi
    • †Leptomeryx speciosus
  • †Leptotomus
  • Lepus
    • †Lepus californicus – or unidentified comparable form
  • Lichanura
  • †Lignimus
    • †Lignimus montis
  • †Limnoecus
    • †Limnoecus compressus
    • †Limnoecus niobrarensis – type locality for species
  • Liquidambar
  • †Longirostromeryx
    • †Longirostromeryx wellsi
  • Portrait living Lontra otters
    Lontra
  • †Loupomys
  • †Lowesaurus
    • †Lowesaurus matthewi
  • Lycopodium

M
  • †Machaeromeryx
    • †Machaeromeryx tragulus – type locality for species
  • Fossilized cranium of the Miocene-Pleistocene saber-toothed cat Machairodus
    †Machairodus
  • Macrochelys
  • †Macrogenis
    • †Macrogenis crassigenis
  • †Macrognathomys
  • Mahonia
    • †Mahonia marginata
  • †Mammacyon
  • †Mammut
  • †Mammuthus
  • Martes
    • †Martes parviloba
  • †Martinogale
    • †Martinogale alveodens
  • Masticophis
  • †Matthewlabis
    • †Matthewlabis cedrensis
  • †Mediochoerus
    • †Mediochoerus blicki – type locality for species
    • †Mediochoerus johnsoni – type locality for species
  • †Megacamelus
    • †Megacamelus merriami – or unidentified comparable form
  • Fossilized skull and limb bones of the Miocene horse Megahippus
    †Megahippus
    • †Megahippus matthewi
    • †Megahippus mckennai
  • †Megalagus
    • †Megalagus brachyodon
    • †Megalagus primitivus
    • †Megalagus turgidus
  • †Megalictis
  • †Megalonyx
  • †Megantereon – tentative report
    • †Megantereon hesperus
  • †Megasminthus
    • †Megasminthus gladiofex
    • †Megasminthus tiheni
  • †Megatylopus
    • †Megatylopus cochrani
    • †Megatylopus gigas
    • †Megatylopus primaevus – or unidentified comparable form
  • †Meliakrouniomys
  • †Meliosma
    • †Meliosma predentata – type locality for species
  • †Meniscomys
  • Life restoration of the Miocene rhinoceros Menoceras
    †Menoceras
  • Mephitis
  • †Merychippus
    • †Merychippus calamarius – or unidentified comparable form
    • †Merychippus coloradense
    • †Merychippus insignis
    • †Merychippus primus
    • †Merychippus quintus
    • †Merychippus republicanus
  • Life restoration of a herd of the Eocene-Miocene oreodont mammal Merychyus
    †Merychyus
    • †Merychyus arenarum
    • †Merychyus crabilli – type locality for species
    • †Merychyus elegans
    • †Merychyus minimus – type locality for species
    • †Merychyus novomexicanus
    • †Merychyus relictus
    • †Merychyus siouxensis – or unidentified comparable form
  • †Merycochoerus
  • Mounted fossilized skeleton of the Miocene pronghorn Merycodus
    †Merycodus
    • †Merycodus necatus
    • †Merycodus prodromus – type locality for species
    • †Merycodus sabulonis
    • †Merycodus warreni
  • †Merycoides
    • †Merycoides longiceps
  • †Merycoidodon
    • †Merycoidodon bullatus
    • †Merycoidodon culbertsoni – type locality for species
    • †Merycoidodon major
  • †Mesocyon – report made of unidentified related form or using admittedly obsolete nomenclature
    • †Mesocyon temnodon
  • †Mesogaulus
    • †Mesogaulus paniensis
  • †Mesohippus
    • †Mesohippus bairdi
  • †Mesoreodon
    • †Mesoreodon chelonyx
    • †Mesoreodon minor
  • †Mesoscalops
    • †Mesoscalops scopelotemos
  • †Metadjidaumo
    • †Metadjidaumo hendryi – or unidentified comparable form
  • Mounted fossilized skeleton of the Miocene-Pleistocene saber-toothed cat Metailurus
    †Metailurus
  • †Metalopex
    • †Metalopex merriami
  • †Metatomarctus
  • †Metechinus
    • †Metechinus amplior
  • †Michenia
    • †Michenia agatensis – type locality for species
  • †Micronatrix – type locality for genus
    • †Micronatrix juliescottae – type locality for species
  • †Micropternodus
    • †Micropternodus borealis
    • †Micropternodus montrosensis – type locality for species
  • Micropterus
  • †Microtomarctus
    • †Microtomarctus conferta
  • Microtus
  • Micrurus
  • Mictomys
    • †Mictomys kansasensis
    • †Mictomys meltoni
    • †Mictomys vetus – or unidentified comparable form
  • †Migmacastor – type locality for genus
  • Life restoration of the Eocene-Oligocene oreodont mammal Miniochoerus
    †Miniochoerus
    • †Miniochoerus affinis
    • †Miniochoerus chadronensis
    • †Miniochoerus forsythae
    • †Miniochoerus gracilis
    • †Miniochoerus helprini – type locality for species
    • †Miniochoerus starkensis – type locality for species
  • †Mioheteromys
    • †Mioheteromys amplissimus – type locality for species
    • †Mioheteromys subterior – type locality for species
  • Fossilized skull of the Eocene-Oligocene three-toed horse Miohippus
    †Miohippus
    • †Miohippus intermedius – or unidentified comparable form
  • †Miolabis
    • †Miolabis princetonianus – type locality for species
  • †Miomustela
    • †Miomustela madisonae
  • †Mionictis
    • †Mionictis elegans – type locality for species
    • †Mionictis incertus – type locality for species
    • †Mionictis letifer – type locality for species
    • †Mionictis pristinus
  • †Miosicista
    • †Miosicista angulus – type locality for species
  • †Miospermophilus
    • †Miospermophilus bryanti
    • †Miospermophilus wyomingensis
  • †Miotapirus
  • †Miotylopus
    • †Miotylopus gibbi
    • †Miotylopus leonardi
  • †Monosaulax
    • †Monosaulax curtus
    • †Monosaulax pansus
    • †Monosaulax skinneri – type locality for species
    • †Monosaulax tedi – type locality for species
  • †Mookomys
    • †Mookomys altifluminis
    • †Mookomys altifluminus
  • Life restoration of the Miocene chalicothere mammal Moropus threatening a pair of the bear-dog Daphoenodon. Jay Matternes (1964).
    †Moropus
    • †Moropus elatus
    • †Moropus hollandi – type locality for species
    • †Moropus merriami
  • Mustela
  • Mycteria
    • †Mycteria milleri
  • †Mylagaulus
    • †Mylagaulus cambridgensis
  • Fossilized skeleton of the Pliocene-Holocene peccary Mylohyus
    †Mylohyus
  • Myodes
  • Myotis
  • †Mystipterus
    • †Mystipterus martini

N
  • †Namatomys
    • †Namatomys lloydi
  • Partial fossilized mandible of the Miocene-Pliocene horse Nannippus
    †Nannippus
    • †Nannippus lenticularis
  • †Nanodelphys
    • †Nanodelphys hunti
  • †Nanotragulus
    • †Nanotragulus loomisi
    • †Nanotragulus ordinatus
  • Natrix – or unidentified comparable form
  • †Nebraskomys
    • †Nebraskomys mcgrewi – type locality for species
  • †Nebraskophis – type locality for genus
    • †Nebraskophis skinneri – type locality for species
  • Life restoration of a herd of Neohipparion. Robert Bruce Horsfall (1913).
    †Neohipparion
    • †Neohipparion affine
    • †Neohipparion eurystyle – or unidentified comparable form
    • †Neohipparion leptode
    • †Neohipparion trampasense
  • †Neonatrix – type locality for genus
    • †Neonatrix elongata – type locality for species
    • †Neonatrix infera – or unidentified comparable form
    • †Neonatrix magna – type locality for species
  • Mounted fossilized skeleton of the Miocene Neophrontops
    Neophrontops
    • †Neophrontops vetustus – type locality for species
  • Neotamias
  • Neotoma
    • †Neotoma quadriplicata – or unidentified comparable form
    • †Neotoma sawrockensis – or unidentified comparable form
  • †Neotragocerus
    • †Neotragocerus improvisus – type locality for species
  • Nerodia
  • †Nexuotapirus
    • †Nexuotapirus marslandensis – type locality for species
  • Fossilized partial cranium of the Miocene saber-toothed cat Nimravides
    †Nimravides
  • †Nordenosaurus
    • †Nordenosaurus magnus – type locality for species
  • †Nothodipoides
    • †Nothodipoides planus
    • †Nothodipoides stirtoni – type locality for species
  • †Nothotylopus
  • †Nototamias
    • †Nototamias quadratus – type locality for species
  • †Nyssa
    • †Nyssa copeana

O
  • †Ocajila
    • †Ocajila makpiyahe
  • Ochotona
  • Odocoileus
  • Ogmodontomys
    • †Ogmodontomys poaphagus
  • †Ogmophis
    • †Ogmophis compactus
    • †Ogmophis miocompactus
  • †Oligobunis
  • †Oligomyotis
  • †Oligoryctes
    • †Oligoryctes cameronensis
  • †Oligoscalops
    • †Oligoscalops galbreathi
  • †Oligospermophilus
    • †Oligospermophilus douglassi
  • A living Ondatra, or muskrat
    Ondatra
    • †Ondatra annectens – or unidentified comparable form
    • †Ondatra idahoensis
    • †Ondatra meadensis
    • †Ondatra zibethicus
  • Onychomys
    • †Onychomys larabeei – or unidentified comparable form
    • †Onychomys leucogaster – or unidentified comparable form
    • †Onychomys pedroensis – or unidentified comparable form
  • Opheodrys – or unidentified comparable form
  • †Ophiomys
    • †Ophiomys fricki
    • †Ophiomys magilli
    • †Ophiomys parvus
  • Ophisaurus
  • †Orelladjidaumo
    • †Orelladjidaumo xylodes – type locality for species
  • †Oreolagus
    • †Oreolagus nebrascensis – type locality for species
  • †Oropyctis
    • †Oropyctis pediasius – type locality for species
  • Ortalis
    • †Ortalis tantala – type locality for species
  • †Osbornodon
  • †Oxetocyon
    • †Oxetocyon cuspidatus
  • Life restoration of a pair of the Oligocene-Miocene camel Oxydactylus. Robert Bruce Horsfall (1913).
    †Oxydactylus
    • †Oxydactylus longipes

P
  • †Paciculus
    • †Paciculus nebraskensis – type locality for species
  • †Paenemarmota
    • †Paenemarmota barbouri
    • †Paenemarmota nevadensis – or unidentified comparable form
    • †Paenemarmota sawrockensis
  • †Palaealectoris – type locality for genus
    • †Palaealectoris incertus – type locality for species
  • †Palaeastur – type locality for genus
    • †Palaeastur atavus – type locality for species
  • Spiral-shaped fossilized burrow and associated skeleton of the Oligocene-Miocene beaver Palaeocastor
    †Palaeocastor
  • †Palaeogale
    • †Palaeogale dorothiae
    • †Palaeogale minuta – or unidentified comparable form
  • †Palaeolagus
    • †Palaeolagus burkei
    • †Palaeolagus haydeni – type locality for species
    • †Palaeolagus hemirhizis – type locality for species
    • †Palaeolagus hypsodus
    • †Palaeolagus intermedius
    • †Palaeolagus philoi
    • †Palaeolagus temnodon
  • †Paleoheterodon – type locality for genus
    • †Paleoheterodon tiheni – type locality for species
  • Panthera
  • †Parablastomeryx
    • †Parablastomeryx gregorii – type locality for species
  • †Paracoluber
    • †Paracoluber storeri
  • †Paracosoryx
    • †Paracosoryx dawesensis
    • †Paracosoryx wilsoni
  • †Paracryptotis
  • †Paractiornis – type locality for genus
    • †Paractiornis perpusillus – type locality for species
  • †Paracynarctus
    • †Paracynarctus kelloggi
    • †Paracynarctus sinclairi – type locality for species
  • †Paradaphoenus
    • †Paradaphoenus minimus
    • †Paradaphoenus tooheyi – type locality for species
  • †Paradjidaumo
    • †Paradjidaumo trilophus
    • †Paradjidaumo validus – type locality for species
  • †Paraenhydrocyon
    • †Paraenhydrocyon wallovianus
  • †Paragerrhonotus – or unidentified comparable form
    • †Paragerrhonotus ricardensis
  • †Parahippus
    • †Parahippus atavus
    • †Parahippus cognatus
  • †Parallomys
    • †Parallomys americanus – type locality for species
  • †Paramerychyus
    • †Paramerychyus harrisonensis
    • †Paramerychyus relictus
  • †Paramicrotoscoptes
    • †Paramicrotoscoptes hibbardi
  • †Paramiolabis
    • †Paramiolabis tenuis
  • Fossilized skeleton of the Pliocene-Pleistocene ground sloth Paramylodon
    †Paramylodon
  • †Paramys
    • †Paramys relictus
  • †Paranamatomys
    • †Paranamatomys storeri
  • †Parapliosaccomys
    • †Parapliosaccomys annae
    • †Parapliosaccomys hibbardi
  • Parascalops – or unidentified comparable form
  • †Parataxidea – or unidentified comparable form
  • †Paratomarctus
    • †Paratomarctus euthos
    • †Paratomarctus temerarius
  • Fossilized partial skull and limb bone of the Eocene-Oligocene camel Paratylopus
    †Paratylopus
    • †Paratylopus labiatus
    • †Paratylopus primaevus
  • †Parictis
    • †Parictis gilpini
  • †Paronychomys
  • †Parophisaurus
    • †Parophisaurus pawneensis
  • †Parvericius
    • †Parvericius montanus
    • †Parvericius voorhiesi – type locality for species
  • †Parvitragulus – tentative report
  • †Pediohierax – type locality for genus
    • †Pediohierax ramenta – type locality for species
  • †Pediolophodon
  • †Pediomeryx
    • †Pediomeryx hemphillensis – or unidentified comparable form
  • Fossilized skull of the Eocene-Oligocene lizard Peltosaurus
    †Peltosaurus
  • †Pelycomys
    • †Pelycomys brulanus – type locality for species
    • †Pelycomys placidus – or unidentified comparable form
  • †Penetrigonias
    • †Penetrigonias dakotensis – type locality for species
  • †Peraceras
    • †Peraceras profectum
    • †Peraceras superciliosum
  • †Perchoerus
    • †Perchoerus probus – tentative report
  • †Peridiomys
    • †Peridiomys borealis
    • †Peridiomys rusticus – type locality for species
  • A living Perognathus pocket mouse
    Perognathus
    • †Perognathus brevidens
    • †Perognathus coquorum
    • †Perognathus furlongi – or unidentified comparable form
    • †Perognathus minutus – or unidentified comparable form
    • †Perognathus pearlettensis
    • †Perognathus trojectioansrum
  • Peromyscus
    • †Peromyscus kansasensis – or unidentified comparable form
  • †Petauristodon
  • †Petenyia – or unidentified comparable form
  • †Phasianus
    • †Phasianus mioceanus – type locality for species
  • †Phelosaccomys
  • †Phenacocoelus
    • †Phenacocoelus typus – type locality for species
  • Phenacomys
    • †Phenacomys intermedius – or unidentified comparable form
  • Illustration of a fossilized skull in multiple views of the Oligocene-Miocene bone-crushing dog Phlaocyon
    †Phlaocyon
  • Phrynosoma
  • Picea
  • Pinus
  • †Pipestoneomys
    • †Pipestoneomys bisulcatus
  • Pituophis
  • †Planisorex
    • †Planisorex dixonensis
  • Platanus
    • †Platanus vitifolia – type locality for species
  • Mounted fossilized skeleton of the Miocene elephant relative Platybelodon
    †Platybelodon
    • †Platybelodon barnumbrowni
    • †Platybelodon loomisi
  • †Platygonus
  • †Pleiolama
    • †Pleiolama mckennai – type locality for species
    • †Pleiolama vera – or unidentified comparable form
  • †Plesiogulo
    • †Plesiogulo lindsayi – or unidentified comparable form
  • †Plesiosorex
    • †Plesiosorex coloradensis
    • †Plesiosorex donroosai
    • †Plesiosorex greeni
  • †Pleurolicus
    • †Pleurolicus exiguus – type locality for species
    • †Pleurolicus hemingfordensis
    • †Pleurolicus sulcifrons – or unidentified comparable form
  • †Pliauchenia
    • †Pliauchenia magnifontis
  • †Plioceros
    • †Plioceros dehlini – type locality for species
    • †Plioceros floblairi – type locality for species
  • †Pliocyon
    • †Pliocyon medius – type locality for species
  • †Pliogale
    • †Pliogale furlongi
  • †Pliogeomys
    • †Pliogeomys russelli – type locality for species
  • Fossilized skull of the Miocene horse Pliohippus
    †Pliohippus
  • †Pliolemmus
    • †Pliolemmus antiquus
  • †Pliometanastes
  • †Plionarctos
  • †Plionictis
    • †Plionictis ogygia
  • †Pliophenacomys
    • †Pliophenacomys osborni
    • †Pliophenacomys primaevus
  • †Pliosaccomys
  • †Pliotaxidea
    • †Pliotaxidea garberi
    • †Pliotaxidea nevadensis
  • †Pliozapus
    • †Pliozapus solus – or unidentified comparable form
  • †Plithocyon
  • †Poebrotherium
    • †Poebrotherium eximium
    • †Poebrotherium wilsoni
  • Illustration of a fossilized skull of the Oligocene false faber-toothed cat Pogonodon
    †Pogonodon
    • †Pogonodon brachyops
  • Populus
    • †Populus crassa
    • †Populus gallowayi – type locality for species
    • †Populus washoensis
  • †Potamonycteris – type locality for genus
    • †Potamonycteris biperforatus – type locality for species
  • †Priusaulax
    • †Priusaulax browni – type locality for species
  • †Proantilocapra
    • †Proantilocapra platycornea – type locality for species
  • †Probassariscus
    • †Probassariscus matthewi
  • †Problastomeryx
    • †Problastomeryx primus
  • †Procamelus
  • †Procastoroides
    • †Procastoroides idahoensis
    • †Procastoroides sweeti – type locality for species
  • †Procranioceras
    • †Procranioceras skinneri
  • †Prodipodomys
  • †Prodipoides
    • †Prodipoides burgensis – type locality for species
    • †Prodipoides dividerus
    • †Prodipoides katensis
  • †Proharrymys
    • †Proharrymys fedti
    • †Proharrymys schlaikjeri
    • †Proharrymys wahlerti – type locality for species
  • †Proheteromys
    • †Proheteromys ironcloudi
  • †Promartes
    • †Promartes darbyi
    • †Promartes lepidus – or unidentified comparable form
    • †Promartes olcotti – type locality for species
  • Restoration of the Miocene hippopotamus-like oreodont Promerycochoerus both onshore and in the water. Robert Bruce Horsfall (1913).
    †Promerycochoerus
    • †Promerycochoerus carrikeri
    • †Promerycochoerus superbus
  • †Promilio
    • †Promilio efferus – type locality for species
  • †Promylagaulus
    • †Promylagaulus riggsi
  • †Pronotolagus
    • †Pronotolagus albus
    • †Pronotolagus apachensis
    • †Pronotolagus whitei – type locality for species
  • †Proscalops
    • †Proscalops miocaenus – or unidentified comparable form
    • †Proscalops secundus
    • †Proscalops tertius
  • †Prosciurus
    • †Prosciurus albiclivus
    • †Prosciurus dawsonae
    • †Prosciurus magnus – type locality for species
    • †Prosciurus parvus – type locality for species
    • †Prosciurus vetustus
  • †Prosomys
    • †Prosomys mimus
  • †Prosthennops
    • †Prosthennops niobrarensis
    • †Prosthennops serus
    • †Prosthennops xiphodonticus
  • †Prosynthetoceras
  • †Protemnocyon – type locality for genus
  • †Proterix
    • †Proterix bicuspis
  • Life restoration of a female (left) and male of the Oligocene-Miocene even-toed ungulate Protoceras. Charles R. Knight (1896).
    †Protoceras
    • †Protoceras skinneri
  • †Protohippus
  • †Protolabis
    • †Protolabis gracilis – or unidentified comparable form
    • †Protolabis heterodontus
    • †Protolabis saxeus – type locality for species
  • †Protomarctus
    • †Protomarctus optatus
  • †Protoprocyon
    • †Protoprocyon savagei – type locality for species
  • †Protosciurus
    • †Protosciurus mengi – type locality for species
  • †Protospermophilus
    • †Protospermophilus kelloggi
    • †Protospermophilus quatalensis – or unidentified comparable form
  • Prunus
    • †Prunus acuminata – type locality for species
  • †Psalidocyon
    • †Psalidocyon marianae
  • Pseudacris
    • †Pseudacris clarki – or unidentified comparable form
    • †Pseudacris nordensis – type locality for species
  • Restoration of the Miocene cat Pseudaelurus
    †Pseudaelurus
    • †Pseudaelurus aeluroides – type locality for species
    • †Pseudaelurus intrepdius – or unidentified comparable form
    • †Pseudaelurus intrepidus
    • †Pseudaelurus marshi – type locality for species
    • †Pseudaelurus stouti
    • †Pseudaelurus validus
  • †Pseudhipparion
    • †Pseudhipparion gratum – type locality for species
    • †Pseudhipparion retrusum
    • †Pseudhipparion skinneri
  • †Pseudoblastomeryx
    • †Pseudoblastomeryx advena – type locality for species
  • †Pseudoceras
    • †Pseudoceras skinneri – type locality for species
  • †Pseudocylindrodon
    • †Pseudocylindrodon neglectus
  • †Pseudocyon
  • †Pseudolabis
    • †Pseudolabis dakotensis
  • †Pseudomyscus
    • †Pseudomyscus bathygnathus – type locality for species
  • †Pseudoparablastomeryx
    • †Pseudoparablastomeryx francescita
    • †Pseudoparablastomeryx scotti
  • Fossilized skeleton of the Eocene protoceratid mammal Pseudoprotoceras
    †Pseudoprotoceras
    • †Pseudoprotoceras longinaris – type locality for species
  • †Pseudotheridomys
  • †Pseudotrimylus
    • †Pseudotrimylus blacki – type locality for species
    • †Pseudotrimylus roperi
  • Pterocarya
    • †Pterocarya oregoniana
  • †Pterogaulus
    • †Pterogaulus barbarellae – type locality for species
    • †Pterogaulus laevis
  • †Pterygoboa
    • †Pterygoboa miocenica
  • †Pylodictis

Q
  • A living Quercus, or oak tree
    Quercus
    • †Quercus argentum
    • †Quercus parvula – type locality for species
    • †Quercus preturbinella – type locality for species
    • †Quercus remingtoni

R

S

T

U
  • A living Ulmus, or elm
    Ulmus
    • †Ulmus speciosa
  • †Umbogaulus
    • †Umbogaulus galushai – type locality for species
    • †Umbogaulus monodon – type locality for species
  • †Untermannerix
    • †Untermannerix copiosus
  • Urocyon
  • †Ursavus
    • †Ursavus brevirhinus – or unidentified comparable form
  • †Urubitinga
    • †Urubitinga enecta – type locality for species
  • †Ustatochoerus

V
  • Leaves and fruit of a living Vitis, or grapevine
    Vitis
    • †Vitis pannosa – type locality for species
  • Vulpes

W
  • †Wilsoneumys
    • †Wilsoneumys planidens
  • †Wrightohyus
    • †Wrightohyus yatkolai

Y
  • †Yatkolamys
    • †Yatkolamys edwardsi – type locality for species
  • Life restoration of the Miocene bear dog Ysengrinia
    †Ysengrinia
    • †Ysengrinia americana
  • †Yumaceras
    • †Yumaceras figginsi

Z
  • Zapus
  • †Zemiodontomys
    • †Zemiodontomys burkei
  • †Zetamys
    • †Zetamys nebraskensis
  • †Ziamys
    • †Ziamys hugeni
  • †Zodiolestes
    • †Zodiolestes daimonelixensis – type locality for species
  • Fossilized cranium of the Miocene-Pleistocene mastodon relative Zygolophodon
    †Zygolophodon

References
  • Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 7 August 2017.
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