List of the Cenozoic life of Nebraska

• Acer • †Acer minor • †Achlyoscapter • Acipenser • †Aciprion • †Aciprion formosum • Acris • †Acris crepitans – or unidentified comparable form • †Acritohippus'' • †Acritohippus isonesus • †Acritohippus tertius • †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 • , or the long-necked camel. Heinrich Harder (1920). †Aepycamelus'' • †Aepycamelus major • †Aepycamelus robustus • Agkistrodon • †Agkistrodon contortix – or unidentified comparable form • †Agnotocastor • †Agnotocastor readingi – type locality for species • †Agriochoerus • †Agriochoerus antiquus • †Agriotherium • †Aletomeryx'' • †Aletomeryx gracilis – type locality for species • †Aletomeryx marslandensis – type locality for species • †Alforjas • †Alilepus • †Alilepus vagus • Alligator • †Alligator mcgrewi – type locality for species • †Alligator mefferdi – type locality for species • †Alligator thomsoni – type locality for species • †Allomys • †Allomys harkseni • †Allophaiomys • †Alluvisorex • †Alluvisorex arcadentes – or unidentified comparable form • , 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 • . Margret Flinsch (1932). †Amebelodon'' • †Amebelodon fricki – type locality for species • †Ameiseophis • †Ameiseophis robinsoni • Amia • †Amia calva • Ammospermophilus • †Ammospermophilus junturensis • †Amphechinus • †Amphicyon • †Amphicyon frendens – type locality for species • †Amphicyon galushai – type locality for species • †Amphicyon ingens • †Amphimachairodus'' • †Amphimachairodus coloradensis • †Anchigyps • †Anchigyps voorhiesi • †Anchitheriomys • †Anchitheriomys fluminis • †Anchitheriomys nanus • †Anchitheriomys stouti – type locality for species • †Anchitherium • 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 • †Apalone miocaenus – type locality for species • †Apalone spinifera • †Apatemys • †Apatemys downsi – or unidentified related form • †Aphelops • †Aphelops megalodus • †Aphelops mutilus – type locality for species • †Apletotomeus • †Apletotomeus crassus – type locality for species • Aplodinotus • †Aplodinotus grunniens • †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 • †Archaeotherium'' • †Archaeotherium mortoni • †Arctodus • †Arctodus simus • 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 • †Atractosteus spatula • †Aulolithomys • †Aulolithomys bounites ==B==

• Baiomys • Balearica • †Barbourofelis'' • †Barbourofelis fricki • †Barbourofelis morrisi – type locality for species • †Barbourofelis whitfordi – type locality for species • †Barbouromeryx • †Barbouromeryx trigonocorneus • Bassariscus • †Bassariscus antiquus – type locality for species • †Bassariscus minimus – type locality for species • †Bassariscus ogallalae – type locality for species • †Bathornis • †Bathornis veredus • †Bathygenys • †Bensonomys • †Bensonomys meadensis • Betula – or unidentified comparable form • Bison • , also known as the giant bison or long-horned bison †Bison latifrons'' • †Blackia • †Blacktops – type locality for genus • †Blacktops latidens – type locality for species • †Blacktops longinares – type locality for species • Blarina • †Blarina brevicauda • †Blastomeryx • †Blastomeryx gemmifer – type locality for species • †Bootherium • '', or Harlan's musk ox. †Bootherium bombifrons – type locality for species • †Boreortalis • †Boreortalis phengitis – type locality for species • †Borophagus • †Borophagus diversidens • †Borophagus pugnator • †Borophagus secundus • †Bothriodon • †Bothriodon americanus • †Bouromeryx • †Bouromeryx americanus • †Bouromeryx submilleri – type locality for species • †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 • †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 • hawk Buteo'' • †Buteo conterminus – type locality for species • †Buteo typhoius ==C==

• †Calamagras • †Calamagras angulatus • †Calamagras murivorus • †Calamagras platyspondyla – type locality for species • †Calippus • †Calippus cerasinus • †Calippus large informal • †Calippus martini • †Calippus placidus • †Calippus proplacidus • †Calippus regulus • †Camelops'' • †Camelops hesternus • †Campestrallomys • †Campestrallomys annectens – type locality for species • †Campestrallomys siouxensis – type locality for species • Canis • †Canis dirus • †Canis edwardii • †Canis ferox • †Canis latrans • †Canis lepophagus • †Capacikala • †Capromeryx'' • †Capromeryx arizonensis • †Capromeryx furcifer • †Capromeryx tauntonensis • †Carpocyon • †Carpocyon compressus • †Carpocyon limosus • †Carpocyon robustus • †Carpocyon webbi – type locality for species • Carya • †Carya libbeyi • Castor • †Castor californicus – or unidentified comparable form • †Castoroides'' • Cedrela • †Cedrela trainii • †Cedromus • †Cedromus savannae – type locality for species • †Cedromus wardi • Celtis • †Celtis kansana • †Centetodon • †Centetodon chadronensis • †Centetodon divaricatus – type locality for species • †Centetodon hendryi • †Centetodon magnus • †Centetodon marginalis • †Centimanomys • †Centimanomys major • †Cephalogale • . Robert Bruce Horsfall (1913). †Ceratogaulus'' • †Ceratogaulus anecdotus • †Ceratogaulus hatcheri • †Ceratogaulus rhinocerus • †Cervalces • †Chadronia – type locality for genus • †Chadronia margaretae – type locality for species • †Chadronycteris • †Chadronycteris rabenae – type locality for species • Chaetodipus • †Chaetodipus hispidus • †Chamaecyparis • †Chamaecyparis linguaefolia • Charina • †Charina prebottae • †Cheilophis • †Cheilophis huerfanoensis • Chelydra • †Chelydra serpentina • †Chelydrops • †Chelydrops stricta – type locality for species • Chrysemys • †Chrysemys picta • †Chumashius • , or yellowwood Cladrastis'' • †Cladrastis prelutea – type locality for species • Clethrionomys • †Clethrionomys gapperi – or unidentified comparable form • Cnemidophorus • †Cnemidophorus sexlineatus • Cocculus • †Cocculus rotunda – type locality for species • †Colodon • †Colodon cingulatus • †Colodon occidentalis • Coluber • †Coluber constrictor • , or Carolina parakeet †Conuropsis'' • †Conuropsis fratercula – type locality for species • †Copedelphys • †Copedelphys stevensoni • †Copemys • †Copemys lindsayi • †Copemys longidens • †Copemys mariae • †Copemys pisinnus • †Copemys shotwelli • †Cordia • †Cordia prealba – type locality for species • Cormocyon †Cormocyon • †Cormocyon copei • †Cormocyon haydeni • †Cormohipparion • †Cormohipparion goorisi • †Cormohipparion johnsoni – type locality for species • †Cormohipparion matthewi – type locality for species • †Cormohipparion merriami – type locality for species • †Cormohipparion occidentale • †Cormohipparion quinni • †Cosoryx • †Cosoryx furcatus • Cranioceras, a relative of modern deer, with anachronistic human to scale †Cranioceras • †Cranioceras unicornis • Crataegus • †Crataegus nupta • †Craterogale – type locality for genus • †Craterogale simus – type locality for species • Crotalus • †Crotalus horridus • †Crusafontina • †Crusafontina magna • Cryptotis • †Crytonyx • †Crytonyx cooki – type locality for species • †Cupidinimus • †Cupidinimus nebraskensis • †Cupidinimus prattensis – type locality for species • †Cupidinimus tertius – or unidentified comparable form • †Cylindrodon • †Cylindrodon nebraskensis • †Cynarctoides • †Cynarctoides acridens • †Cynarctoides emryi – type locality for species • †Cynarctoides roii • †Cynarctus • †Cynarctus crucidens – type locality for species • †Cynarctus saxatilis • †Cynarctus voorhiesi – type locality for species • †Cynelos'' • †Cynelos idoneus • †Cynelos sinapius • †Cynodesmus • †Cynodesmus martini – type locality for species • †Cynodesmus thooides • †Cynomyoides • †Cynomyoides vatis – type locality for species • Cynomys • †Cynomys niobrarius • †Cynomys sappaensis – type locality for species • †Cynomys spenceri – type locality for species ==D==

• †Dakotaophis • †Dakotaophis greeni • †Daphoenictis • †Daphoenictis tedfordi • †Daphoenodon • †Daphoenodon falkenbachi • †Daphoenodon niobrarensis – type locality for species • †Daphoenodon robustum • †Daphoenodon superbus • †Daphoenus'' – type locality for genus • †Daphoenus felinus • †Daphoenus hartshornianus • †Daphoenus vetus – type locality for species • Dasypus • †Dasypus bellus • †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 • †Desmocyon matthewi • †Desmocyon thomsoni • Diceratherium. Robert Bruce Horsfall (1913). †Diceratherium • †Diceratherium annectens • †Diceratherium armatum • †Diceratherium niobrarense – type locality for species • †Diceratherium radtkei • Dicrostonyx • †Dicrostonyx torquatus • †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 • †Dinohyus hollandi – type locality for species • †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 • †Dromomeryx'' • †Dromomeryx borealis – type locality for species ==E==

• †Ecclesimus • †Ecclesimus tenuiceps • †Ectopocynus • †Ectopocynus simplicidens – type locality for species • †Ectypodus • †Ectypodus lovei • †Edaphocyon • †Edaphocyon lautus – type locality for species • †Ekgmowechashala • †Ekgmowechashala philotau • Elaphe • †Elaphe guttata • †Elaphe kansensis – or unidentified comparable form • †Elaphe nebraskensis – type locality for species • †Elaphe obsoleta • †Elaphe vulpina • †Elomeryx'' – tentative report • Emydoidea • †Emydoidea blandingii • †Emydoidea hutchisoni – type locality for species • †Enhydrocyon • †Enhydrocyon pahinsintewakpa • †Entoptychus • †Entoptychus grandiplanus – type locality for species • †Eotylopus • †Eotylopus reedi • †Epeiromys • †Epeiromys spanius – type locality for species • †Epicyon'' • †Epicyon haydeni • †Epicyon saevus • Equus • †Equus conversidens – or unidentified comparable form • †Equus excelsus • †Equus francisci • †Equus simplicidens • Erethizon • †Erethizon dorsatum • Esox • †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 • 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 • , or ash tree, with insets further detailing its anatomy †Fraxinus'' • †Fraxinus coulteri ==G==

• , 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 • 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 • †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 • †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 • †Helodermoides tuberculatus • †Hemiauchenia • †Hemiauchenia macrocephala • †Heptacodon • †Heptacodon occidentale – or unidentified comparable form • †Herpetotherium • †Herpetotherium fugax • †Herpetotherium youngi • †Hesperhys • †Hesperhys vagrans • . 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 • †Heterodon nasicus • †Heterodon platyrhinos • †Heteromeryx • †Heteromeryx dispar • †Hibbardomys • †Hibbardomys marthae – type locality for species • †Hibbardomys skinneri – type locality for species • †Hibbardomys voorhiesi – type locality for species • †Hipparion • †Hipparion forcei • †Hipparion tehonense • †Hippotherium • †Hitonkala • †Hitonkala macdonaldtau – type locality for species • Holbrookia – tentative report • †Holbrookia antiqua – type locality for species • , or scimitar cat †Homotherium'' • †Homotherium crusafonti • †Hoplophoneus • †Hoplophoneus mentalis • †Hoplophoneus primaevus • †Hyaenodon • †Hyaenodon crucians • Hyla • †Hyla gratiosa – or unidentified comparable form • †Hyla squirella – or unidentified comparable form • †Hyla versicolor – or unidentified comparable form • †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 • . 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 • . 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 • †Indarctos'' • †Indarctos oregonensis • †Ischyrocyon • †Ischyrocyon gidleyi • †Ischyromys • †Ischyromys douglassi • †Ischyromys typus • †Ischyromys veterior ==J==

• †Jimomys • †Jimomys labaughi – type locality for species • Juglans ==K==

• †Kalobatippus'' • †Kalobatippus agatensis • †Kansasimys • Kinosternon • †Kinosternon flavescens • †Kirkomys • †Kirkomys nebraskensis ==L==

• †Lambdoceras • †Lambdoceras siouxensis • , or eastern kingsnake Lampropeltis'' • †Lampropeltis calligaster • †Lampropeltis getulus • †Lampropeltis similis – type locality for species • †Lampropeltis triangulum • †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 • , or gar Lepisosteus'' • †Lepoides • †Lepoides lepoides – type locality for species • Lepomis • †Lepomis microlophus • †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 • †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 • †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 • otters Lontra'' • †Loupomys • †Lowesaurus • †Lowesaurus matthewi • Lycopodium ==M==

• †Machaeromeryx • †Machaeromeryx tragulus – type locality for species • †Machairodus'' • Macrochelys • †Macrochelys schmidti • †Macrochelys temminckii • †Macrogenis • †Macrogenis crassigenis • †Macrognathomys • Mahonia • †Mahonia marginata • †Mammacyon • †Mammut • †Mammut matthewi • †Mammuthus • , or Columbian mammoths. The extent of the fur depicted is hypothetical. Charles R. Knight (1909). †Mammuthus columbi'' • Martes • †Martes parviloba • †Martinogale • †Martinogale alveodens • Masticophis • †Masticophis flagellum • †Matthewlabis • †Matthewlabis cedrensis • †Mediochoerus • †Mediochoerus blicki – type locality for species • †Mediochoerus johnsoni – type locality for species • †Megacamelus • †Megacamelus merriami – or unidentified comparable form • †Megahippus'' • †Megahippus matthewi • †Megahippus mckennai • †Megalagus • †Megalagus brachyodon • †Megalagus primitivus • †Megalagus turgidus • †Megalictis • †Megalictis ferox • †Megalonyx • †Megalonyx curvidens • †Megalonyx leptostomus • †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 • †Menoceras'' • †Menoceras arikarense – type locality for species • †Menoceras barbouri • Mephitis • †Mephitis mephitis • †Merychippus • †Merychippus calamarius – or unidentified comparable form • †Merychippus coloradense • †Merychippus insignis • †Merychippus primus • †Merychippus quintus • †Merychippus republicanus • †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 • †Merycochoerus magnus – type locality for species • †Merycochoerus matthewi • †Merycochoerus proprius • †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 • †Metailurus'' • †Metalopex • †Metalopex merriami • †Metatomarctus • †Metatomarctus canavus • †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 • †Microtus ochrogaster • †Microtus pennsylvanicus • Micrurus • Mictomys • †Mictomys kansasensis • †Mictomys meltoni • †Mictomys vetus – or unidentified comparable form • †Migmacastor – type locality for genus • †Migmacastor procumbodens – type locality for species • †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 • †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 • †Miotapirus harrisonensis • †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 • †Moropus • †Moropus elatus • †Moropus hollandi – type locality for species • †Moropus merriami • Mustela • †Mustela frenata • †Mustela nigripes • †Mustela rexroadensis – or unidentified comparable form • †Mustela vison • Mycteria • †Mycteria milleri • †Mylagaulus • †Mylagaulus cambridgensis • †Mylohyus'' • Myotis • †Mystipterus • †Mystipterus martini ==N==

• †Namatomys • †Namatomys lloydi • †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 • . 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 • 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 • †Nerodia hillmani • †Nerodia rhombifera • †Nerodia sipedon • †Nexuotapirus • †Nexuotapirus marslandensis – type locality for species • †Nimravides'' • †Nimravides galiani • †Nimravides pedionomus – type locality for species • †Nimravides thinobates • †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 • †Ochotona spanglei – or unidentified comparable form • Odocoileus • , or white-tailed deer †Odocoileus virginianus'' • Ogmodontomys • †Ogmodontomys poaphagus • †Ogmophis • †Ogmophis compactus • †Ogmophis miocompactus • †Oligobunis • †Oligomyotis • †Oligoryctes • †Oligoryctes cameronensis • †Oligoscalops • †Oligoscalops galbreathi • †Oligospermophilus • †Oligospermophilus douglassi • , 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 • , or eastern glass lizard †Ophisaurus ventralis'' • †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 • †Osbornodon fricki • †Osbornodon iamonensis • †Osbornodon renjiei • †Oxetocyon • †Oxetocyon cuspidatus • . 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 • †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 • , or lion †Panthera leo'' • †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 • Paramylodon †Paramylodon • †Paramylodon harlani • †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 • †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 • †Peltosaurus'' • †Peltosaurus granulosus • †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 • 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 • †Phlaocyon'' • †Phlaocyon annectens • †Phlaocyon leucosteus • †Phlaocyon mariae – type locality for species • †Phlaocyon marslandensis • †Phlaocyon minor • †Phlaocyon yatkolai – type locality for species • Phrynosoma • †Phrynosoma cornutum • Picea • Pinus • †Pipestoneomys • †Pipestoneomys bisulcatus • Pituophis • †Pituophis catenifer • †Pituophis melanoleucus • †Planisorex • †Planisorex dixonensis • Platanus • †Platanus vitifolia – type locality for species • †Platybelodon'' • †Platybelodon barnumbrowni • †Platybelodon loomisi • †Platygonus • †Platygonus compressus • †Platygonus pollenae – type locality for species • †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 • †Pliohippus'' • †Pliohippus mirabilis • †Pliohippus nobilis • †Pliohippus pernix • †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 • †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 • †Procamelus grandis • †Procamelus leptocolon • †Procamelus occidentalis • †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 • -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 • †Protemnocyon inflatus – type locality for species • †Proterix • †Proterix bicuspis • . Charles R. Knight (1896). †Protoceras'' • †Protoceras skinneri • †Protohippus • †Protohippus gidleyi • †Protohippus perditus • †Protohippus supremus • †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 • †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 • †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 • †Pylodictis olivaris ==Q==

• , or oak tree Quercus'' • †Quercus argentum • †Quercus parvula – type locality for species • †Quercus preturbinella – type locality for species • †Quercus remingtoni ==R==

• †Rakomeryx • †Rakomeryx sinclairi • and Cosoryx. Robert Bruce Horsfall (1913). †Ramoceros'' • †Ramoceros osborni • †Rana • †Rana catesbeiana • †Rana clamitans • †Rana pipiens • †Rana sylvatica • †Regina • †Regina grahami • Reithrodontomys • †Reithrodontomys pratincola • †Repomys • †Repomys gustelyi • , or North American worm lizard Rhineura'' • †Rhineura hatcherii • †Rhineura marslandensis – type locality for species • Rhinocheilus • †Rhinocheilus lecontei • †Ribes • †Ribes infrequens – type locality for species • †Robinia • †Robinia lesquereuxi • †Russellagus • †Russellagus vonhofi ==S==

• , or willow Salix'' • Salvadora • †Salvadora paleolineata – type locality for species • †Sanctimus • †Sanctimus falkenbachi – type locality for species • †Sanctimus stouti – or unidentified comparable form • †Sanctimus stuartae • †Sarcobatus – or unidentified comparable form • †Satherium • †Satherium piscinarium • †Scalopoides • †Scalopoides hutchisoni – type locality for species • †Scalopoides isodens • †Scalopoides ripafodiator • Scalopus • †Scalopus aquaticus • Scaphiopus • †Scaphiopus wardorum – type locality for species • †Scaphohippus'' • †Scaphohippus intermontanus • †Scaphohippus sumani • Sceloporus • †Sceloporus robustus • †Sceloporus undulatus • †Schaubeumys • †Schaubeumys cartomylos • †Schaubeumys clivosus • †Schaubeumys grangeri • †Schaubeumys sabrae • †Schizodontomys • †Schizodontomys amnicolus – type locality for species • †Schizodontomys harkseni – or unidentified comparable form • †Scottimus • †Scottimus lophatus – type locality for species • †Scottimus viduus – type locality for species • Sequoia – or unidentified comparable form • †Serbelodon • †Serbelodon barbourensis • †Sespia'' • †Sespia nitida • Sigmodon • †Sigmodon minor • †Simimys – tentative report • †Sinclairella • †Sinclairella dakotensis • †Sinclairomeryx • †Sinclairomeryx riparius – type locality for species • Siren • Sistrurus • †Sistrurus catenatus • †Skinnerhyus – type locality for genus • †Skinnerhyus shermerorum – type locality for species • †Skinneroceras – type locality for genus • †Skinneroceras manningi – type locality for species • †Smilodon'' • †Smilodon fatalis – or unidentified comparable form • †Sminthosinis • Sorex • †Sorex arcticus • †Sorex cinereus • †Sorex edwardsi – type locality for species • †Sorex palustris • †Sorex sandersi • †Sorex yatkolai – type locality for species • Spea • †Spea bombifrons • †Spea neuter • Spermophilus • †Spermophilus boothi • †Spermophilus cyanocittus – type locality for species • †Spermophilus elegans • †Spermophilus franklinii – or unidentified comparable form • †Spermophilus johnstoni • †Spermophilus matthewi – type locality for species • †Spermophilus meltoni • †Spermophilus richardsonii • †Spermophilus shotwelli – or unidentified comparable form • †Spermophilus tridecemlineatus • †Sphenophalos • †Sphenophalos middleswarti – type locality for species • Spizaetus • †Spizaetus tanneri – type locality for species • †Stegomastodon'' • †Stegomastodon aftoniae • †Stegomastodon primitivus • †Stehlinia – tentative report • †Steneofiber • †Steneofiber barbouri • †Steneofiber fossor • †Stenomylus • †Stenomylus crassipes – type locality for species • †Stenomylus gracilis • †Stenomylus hitchcocki – type locality for species • Sthenictis • †Sthenictis bellus – type locality for species • †Sthenictis dolichops – type locality for species • †Stibarus • †Stibarus obtusilobus • †Stibarus quadricuspis • †Stratimus • †Stratimus strobeli – type locality for species • †Stuckyhyus • †Stuckyhyus siouxensis – type locality for species • †Stylemys • †Stylemys nebrascensis • . Robert Bruce Horsfall (1913). †Subdromomeryx'' • †Subdromomeryx antilopinus • †Subhyracodon • †Subhyracodon mitis • †Submeryceros • †Submeryceros minor • †Sunkahetanka • †Sunkahetanka geringensis • Sylvilagus • †Sylvilagus floridanus • Synaptomys • †Synaptomys cooperi • †Syndyoceras • †Syndyoceras cooki – type locality for species • †Synthetoceras'' • †Synthetoceras tricornatus ==T==

• Tamias • †Tamias ateles • †Tanymykter • †Tanymykter brachyodontus • †Tanymykter longirostris – type locality for species • Tapirus • †Tapirus johnsoni – type locality for species • †Tapirus polkensis – or unidentified comparable form • †Tapirus simpsoni • Taxidea • †Taxidea taxus • †Teleoceras'' • †Teleoceras americanum • †Teleoceras fossiger • †Teleoceras hicksi • †Teleoceras major – type locality for species • †Teleoceras medicornutum • †Teleoceras meridianum • †Temnocyon • †Temnocyon percussor – type locality for species • †Temnocyon typicus – type locality for species • †Temperocastor • †Temperocastor valentinensis • †Tenudomys • †Tenudomys basilaris – type locality for species • †Tenudomys ridgeviewensis – type locality for species • †Tenudomys titanus • †Tephrocyon • †Tephrocyon scitulus • Terrapene • †Terrapene corneri – type locality for species • , or western box turtles †Terrapene ornata'' – type locality for species • †Tetrabelodon • †Tetrabelodon osborni • †Texasophis • †Texoceros • †Texoceros altidens – type locality for species • †Texoceros guymonensis • Thamnophis • †Thamnophis proximus • †Thamnophis radix • †Thamnophis sirtalis • †Thinobadistes'' • †Thinohyus • Thomomys • †Thylacaelurus • †Thylacaelurus montanus • †Ticholeptus • †Ticholeptus zygomaticus • Tilia • †Titanotylopus • †Titanotylopus nebraskensis – type locality for species • †Tomarctus • †Tomarctus brevirostris • †Tomarctus hippophaga – type locality for species • Trachemys • †Trachemys inflata – or unidentified comparable form • †Tregophis • †Tregophis brevirachis • †Trigenicus • †Trigenicus profectus • †Trigonias • †Trigonias osborni • †Trigonias wellsi • †Trigonictis • †Trigonictis cookii • †Trigonictis macrodon • †Trilaccogaulus • †Trilaccogaulus ovatus • Trionyx • †Trionyx quinni – type locality for species • Tropidoclonion – or unidentified comparable form • †Tylionomys • †Tylionomys voorhiesi – type locality for species • †Tylionomys woodi • †Tylocephalonyx • †Tylocephalonyx skinneri – type locality for species ==U==