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UCMP Type Specimens of Terrestrial Miocene Mammals Link to an image of the type specimen and diagnosis by clicking on a taxon name Link to the UCMP specimen record and catalog by clicking on a specimen number * Indicates additional UCMP Collections Photos are available from the specimen record page 54600 Insectivora Erinaceidae Lanthanotherium sawini 29600 Insectivora Erinaceidae Metechinus nevadensis 99671 Insectivora Erinaceidae Proterix loomisi 29603 Insectivora Plesiosoricidae Plesiosorex latidens 114576 Insectivora Soricidae Alluvisorex arcadentes 31047 Insectivora Soricidae Limnoecus tricuspis 36171 Insectivora Soricidae Limnoecus niobrarensis 116569 Insectivora Soricidae Sorex edwardsi 116572 Insectivora Soricidae Sorex yatkolai 114578 Insectivora Talpidae Achlyoscapter longirostris 130261 Insectivora Talpidae Lemoynea biradicularis 114577 Insectivora Talpidae Mystipterus pacificus 29604 Insectivora Talpidae Mystipterus vespertilio 114583 Insectivora Talpidae Neurotrichus columbianus 46626 Insectivora Talpidae Scapanus schultzi 23376 Lagomorpha Leporidae Hypolagus edensis 11571 Lagomorpha Leporidae Hypolagus parviplicatus 12565 Lagomorpha Leporidae Hypolagus vetus 33425 Lagomorpha Leporidae Hypolagus fontinalis 12575 Lagomorpha Ochotonidae Oreolagus nevadensis 82151 Lagomorpha Ochotonidae Cuyamalagus dawsoni 11897 Rodentia Aplodontidae Liodontia furlongi 11325 Rodentia Aplodontidae Liodontia alexandrae 38662 Rodentia Aplodontidae Tardontia occidentale 32764 Rodentia Castoridae Dipoides williamsi 5002 Rodentia Castoridae Eucastor lecontei 31574 Rodentia Castoridae Eucastor lecontei 29691 Rodentia Castoridae Eucastor dividerus 28502 Rodentia Cricetidae Copemys longidens 74330 Rodentia Cricetidae Copemys barstowensis 36103 Rodentia Cricetidae Copemys niobrarensis 36105 Rodentia Cricetidae Copemys kelloggae 54580 Rodentia Cricetidae Copemys russelli 29635 Rodentia Cricetidae Copemys dentalis 75365 Rodentia Cricetidae Copemys tenuis 12571 Rodentia Cricetidae Peromyscus antiquus 36030 Rodentia Cricetidae Pliotomodon primitivus 78468 Rodentia Eomyidae Pseudadjidaumo stirtoni 80311 Rodentia Eomyidae Pseudotheridomys cuyamensis 125740 Rodentia Geomyidae Gregorymys lavsoni 122004 Rodentia Geomyidae Harrymys irvini 39435 Rodentia Geomyidae Schizodontomys greeni 12567 Rodentia Heteromyidae Cupidinimus magnus 28529 Rodentia Heteromyidae Cupidinimus halli 29632 Rodentia Heteromyidae Cupidinimus tertius 29639 Rodentia Heteromyidae Cupidinimus quartus 77070 Rodentia Heteromyidae Cupidinimus lindsayi 12566 Rodentia Heteromyidae Diprionomys parvus 12569 Rodentia Heteromyidae Diprionomys minimus 37134 Rodentia Heteromyidae Mioheteromys amplissimus 78128 Rodentia Heteromyidae Mojavemys lophatus 78155 Rodentia Heteromyidae Mojavemys alexandrae 76982 Rodentia Heteromyidae Mookomys sibtilis 28535 Rodentia Heteromyidae Peridiomys kelloggi 78164 Rodentia Heteromyidae Perognathoides eurekensis 39094 Rodentia Heteromyidae Prodipodomys mascallensis 54593 Rodentia Heteromyidae Proheteromys maximus 44694 Rodentia Mylagaulidae Alphagaulus douglassi 54535 Rodentia Sciuridae Ammospermophilus fossilis 12506 Rodentia Sciuridae Arctomys nevadensis 12538 Rodentia Sciuridae Arctomys minor 28521 Rodentia Sciuridae Eutamias ateles 34281 Rodentia Sciuridae Otospermophilus argonotus 26793 Rodentia Sciuridae Otospermophilus gidleyi 39093 Rodentia Sciuridae Protospermophilus oregonensis 34550 Rodentia Sciuridae Protospermophilus quatalensis 54530 Rodentia Sciuridae Sciuropterus uphami 78525 Rodentia Sciuridae Sciuropterus jamesi 78538 Rodentia Sciuridae Sciuropterus minimus 50429 Rodentia Sciuridae Sciuropterus matthewsi 29634 Rodentia Zapodidae Macrognathomys nanus 34146 Carnivora Amphicyonidae Amphicyon frendens 32118 Carnivora Amphicyonidae Dinocyon gidleyi 33082 Carnivora Amphicyonidae Pliocyon marshi 32119 Carnivora Amphicyonidae Pliocyon medius 34244 Carnivora Canidae Aelurodon taxoides 39733 Carnivora Canidae Aelurodon simulans 33841 Carnivora Canidae Aelurodon ferox 33474 Carnivora Canidae Aelurodon stirtoni 33081 Carnivora Canidae Aelurodon taxoides 39732 Carnivora Canidae Aelurodon francisci * 33476 Carnivora Canidae Borophagus littoralis 34145 Carnivora Canidae Borophagus direptor 31503 Carnivora Canidae Borophagus littoralis 545 Carnivora Canidae Canis davisi 33569 Carnivora Canidae Carpocyon robustus 83577 Carnivora Canidae Cynarctus crucidens 33088 Carnivora Canidae Cynodesmus cuspidatus 33842 Carnivora Canidae Epicyon haydeni 33843 Carnivora Canidae Epicyon saevus 32328 Carnivora Canidae Epicyon saevus 21507 Carnivora Canidae Epicyon haydeni 33086 Carnivora Canidae Nothocyon coloradoensis 33087 Carnivora Canidae Nothocyon multicuspis 45329 Carnivora Canidae Osteoborus crassapineatus 83337 Carnivora Canidae Osteoborus orc 34144 Carnivora Canidae Osteoborus secundus 64448 Carnivora Canidae Osteoborus hilli 11562 Carnivora Canidae Paracynarctus kelloggi 29282 Carnivora Canidae Paratomarctus euthos 64450 Carnivora Canidae Tephrocyon rurestris 33089 Carnivora Canidae Tephrocyon marshi 94721 Carnivora Canidae Tomarctus hippophagus 124942 Carnivora Felidae Barbourofelis fricki 19476 Carnivora Felidae Barbourofelis osborni 33093 Carnivora Felidae Machairodus niobrarensis 34513 Carnivora Felidae Nimravides thinobates 32014 Carnivora Felidae Pseudaelurus intrepidus 33005 Carnivora Felidae Pseudaelurus intrepidus 29186 Carnivora Felidae Pseudaelurus pedionomus 33090 Carnivora Felidae Pseudaelurus marshi 22968 Carnivora Mustelidae Cernictis hesperus 66101 Carnivora Mustelidae Hypsoparia bosemanensis 27296 Carnivora Mustelidae Leptarctus primus 34153 Carnivora Mustelidae Leptarctus primus 27295 Carnivora Mustelidae Leptarctus primus 32314 Carnivora Mustelidae Martes campestris 27294 Carnivora Mustelidae Mionictis incertus 34151 Carnivora Mustelidae Mionictis incertus 27293 Carnivora Mustelidae Mionictis elegans 34152 Carnivora Mustelidae Mionictis elegans 21323 Carnivora Mustelidae Mustela buwaldi 12540 Carnivora Mustelidae Pliogale furlongi 22290 Carnivora Mustelidae Pliotaxidea nevadensis 52422 Carnivora Mustelidae Pliotaxidea garberi 27292 Carnivora Mustelidae Sthenictis dolichops 34150 Carnivora Mustelidae Sthenictis bellus 19768 Carnivora Procyonidae Bassariscus parvus 24025 Carnivora Ursidae Agriotherium gregoryi 37077 Carnivora Ursidae Agriotherium schneideri 38629 Carnivora Ursidae Indarctos nevadensis 22362 Carnivora Ursidae Indarctos oregonensis 12539 Carnivora Ursidae Probassariscus antiquus 39953 Artiodactyla Anthracotheriidae Arretotherium acridens 11880 Artiodactyla Antilocapridae Ilingoceros alexandrae 11893 Artiodactyla Antilocapridae Ilingoceros schizoceras 20052 Artiodactyla Antilocapridae Merycodus coronatus 26795 Artiodactyla Antilocapridae Merycodus furlongi 12608 Artiodactyla Antilocapridae Merycodus nevadensis 113732 Artiodactyla Antilocapridae Ottoceros peacevalleyensis 11887 Artiodactyla Antilocapridae Sphenophalos nevadanus 30337 Artiodactyla Antilocapridae Texocerus texanus 11564 Artiodactyla Blastomerycidae Blastomeryx mollis 65339 Artiodactyla Camelidae Cuyamacamelus jamesi 26015 Artiodactyla Camelidae Hesperocamelus alexandrae 35382 Artiodactyla Camelidae Hesperocamelus stylodon 38668 Artiodactyla Camelidae Hesperocamelus bradyi 23483 Artiodactyla Camelidae Megacamelus merriami 31100 Artiodactyla Camelidae Megatylopus matthewi 137214 Artiodactyla Camelidae Paramiolabis taylori 33021 Artiodactyla Camelidae Pliauchenia vera 32106 Artiodactyla Camelidae Pliauchenia magnifontis 19820 Artiodactyla Camelidae Procamelus coartatus 23423 Artiodactyla Camelidae Procamelus edensis 32864 Artiodactyla Camelidae Procamelus grandis 39730 Artiodactyla Camelidae Procamelus benedentalus 39731 Artiodactyla Camelidae Procamelus concerptus 30703 Artiodactyla Cervidae Pediomeryx hemphillensis 29851 Artiodactyla Cervidae Pediomeryx ruminalis 32116 Artiodactyla Dromomerycidae Cranioceras dakotensis 65422 Artiodactyla Dromomerycidae Cranioceras skinneri 65424 Artiodactyla Dromomerycidae Cranioceras granti 21350 Artiodactyla Merycoidodontidae Brachycrus laticeps 22902 Artiodactyla Merycoidodontidae Merycochoerus proprius 123626 Artiodactyla Merycoidodontidae Ticholeptus paludicola 21351 Artiodactyla Merycoidodontidae Ticholeptus californicus 32372 Artiodactyla Protoceratidae Lambdoceras hessei 31520 Artiodactyla Protoceratidae Synthetoceras tricornatus 66567 Artiodactyla Tayassuidae Cynorca hesperia 66574 Artiodactyla Tayassuidae Cynorca proterva 94694 Artiodactyla Tayassuidae Dyseohyus stirtoni 94693 Artiodactyla Tayassuidae Dyseohyus fricki 39952 Artiodactyla Tayassuidae Hesperhys vagrans 23369 Artiodactyla Tayassuidae Prosthennops edensis 33091 Artiodactyla Tayassuidae Prosthennops longirostris 32814 Perissodactyla Equidae Calippus martini * 33051 Perissodactyla Equidae Hipparion forcei 22351 Perissodactyla Equidae Hipparion anthonyi 58234 Perissodactyla Equidae Hipparion trampasense 27511 Perissodactyla Equidae Hipparion equinus 19830 Perissodactyla Equidae Hipparion platystyle 27512 Perissodactyla Equidae Hipparion affine 27514 Perissodactyla Equidae Hipparion ingenium 27515 Perissodactyla Equidae Hipparion plicatile 19787 Perissodactyla Equidae Hipparion mohavense 21311 Perissodactyla Equidae Hipparion mohavense 21056 Perissodactyla Equidae Hypohippus nevadensis 59271 Perissodactyla Equidae Megahippus webbi 27529 Perissodactyla Equidae Megahippus matthewi 64601 Perissodactyla Equidae Megahippus matthewi 21247 Perissodactyla Equidae Merychippus californicus 21400 Perissodactyla Equidae Merychippus intermontanus 33003 Perissodactyla Equidae Merychippus insignis 22918 Perissodactyla Equidae Merychippus insignis 27524 Perissodactyla Equidae Merychippus supremus 34142 Perissodactyla Equidae Merychippus republicanus 27521 Perissodactyla Equidae Merychippus perditus 34141 Perissodactyla Equidae Merychippus sejunctus 21422 Perissodactyla Equidae Merychippus sumani 27513 Perissodactyla Equidae Nannippus gratum 27517 Perissodactyla Equidae Nannippus whitneyi 33012 Perissodactyla Equidae Nannippus gratum 32991 Perissodactyla Equidae Nannippus lenticularis 21779 Perissodactyla Equidae Nannippus tehonensis 21780 Perissodactyla Equidae Nannippus gratum 32988 Perissodactyla Equidae Neohipparion eurystyle 32987 Perissodactyla Equidae Neohipparion eurystyle 21382 Perissodactyla Equidae Neohipparion gidleyi 19414 Perissodactyla Equidae Neohipparion leptode 21370 Perissodactyla Equidae Neohipparion molle 19840 Perissodactyla Equidae Parahippus mourningi 27526 Perissodactyla Equidae Parahippus agrestis 27508 Perissodactyla Equidae Parahippus crenidens 27520 Perissodactyla Equidae Parahippus avus 27516 Perissodactyla Equidae Parahippus cognatus 21410 Perissodactyla Equidae Pliohippus stylodontus 23331 Perissodactyla Equidae Pliohippus edensis 23510 Perissodactyla Equidae Pliohippus osborni 27519 Perissodactyla Equidae Pliohippus spectans 34137 Perissodactyla Equidae Pliohippus fossulatus 30200 Perissodactyla Equidae Pliohippus bakeri 30225 Perissodactyla Equidae Pliohippus ansae 27518 Perissodactyla Equidae Pliohippus pernix 32990 Perissodactyla Equidae Pliohippus interpolatus 19434 Perissodactyla Equidae Pliohippus tantalus 19789 Perissodactyla Equidae Pliohippus fairbanksi 21341 Perissodactyla Equidae Protohippus coalingensis 34136 Perissodactyla Equidae Protohippus pachyops 97490 Primates Omomyidae Shoshonius cooperi 67101 Proboscidea Gomphotheriidae Gomphotherium minor 32883 Proboscidea Gomphotheriidae Gomphotherium simpsoni 22511 Proboscidea Gomphotheriidae Gomphotherium cingulatum 80416 Xenarthra Megalonychidae Megalonyx mathisi