Museum of Transitional Fossils

  Family Miacidae † Genus  Eosictis Genus  Messelogale [10] Genus  Miacis Genus  Miocyon Genus  Oodectes Genus  Palaearctonyx Genus  Paramiacis Genus  Paroodectes Genus  Procynodictis [11] Genus  Prodaphaenus Genus  Quercygale [12] Genus  Tapocyon Genus  Uintacyon Genus  Vassacyon Genus  Vulpavus Genus  Xinyuictis Miacis Species: M. parvivorus Cope , 1872 [5] Black's Fork of Green River,  Bridger Formation  (Wyoming, USA) Type species. Alteratively  Viverravus  parvivorus  and  Vulpavus parvivorus M. sylvestris Marsh , 1872 [6] Bridger Formation  (Wyoming, USA) Harpalodon sylvestris  according to J. L. Wortman 1901 [7] M. vulpinus Scott  &  Osborn , 1887 [8] Uinta Basin  (Utah, USA) Described as  Amphicyon  vulpinum ; assigned to Miacis by Matthew (1909) [9] M. uintensis Osborn  1895 [10] Uinta Basin  (Utah, USA) now assigned to  Prodaphaenus  uintensis   Friscia  &  Rasmussen  2010 [11] M. hargeri Wortman , 1901 [12] Bridger Formation  (Wyoming, USA) M. washakius M. medius

  Arcanotherium † Daouitherium † Eritherium ? † Khamsaconus ? † Moeritherium † Numidotherium † Phosphatherium † Saloumia † Barytheriidae Barytherium Omanitherium † Deinotheriidae Chilgatherium Deinotherium Prodeinotherium Elephantiformes † Dagbatitherium † Eritreum † Hemimastodon † Palaeomastodon † Phiomia

  Haikouella Haikouichthys M Metaspriggina Myllokunmingia P Pikaia Y Yunnanozoon Z Zhongjianichthys Zhongxiniscus Cathaymyrus

 Cambrian stage 3 arthropod likely ancestral to radiodonts and opabinia. Filling in a gap of the "Cambrian explosion."

  Genera with hindlimbs and a  sacrum Najash Genera with hindlimbs only Eupodophis Haasiophis Pachyrhachis

  † Acerosodontosaurus ? † Claudiosaurus ? † Eorhynchochelys † Eunotosaurus ? † Odontochelys † Pappochelys † Sauropterygia ? † Saurosphargidae ? Testudinata † Chinlechelys † Proganochelys † Proterochersis † Australochelyidae Australochelys Palaeochersis Waluchelys Mesochelydia † Condorchelys † Eileanchelys † Heckerochelys † Indochelys † Kayentachelys Perichelydia † Kallokibotion † Spoochelys † Angolachelonia ? † Macrobaenidae ? † Paracryptodira ? † Sinemydidae ? † Xinjiangchelyidae ? † Helochelydridae Aragochersis Helochelydra Helochelys Naomichelys Solemys † Meiolaniformes Chubutemys Otwayemys Patagoniaemys Peligrochelys Trapalcochelys Meiolaniidae Gaffneylania Meiolania Ninjemys Niolamia Warkalania † Sichuanchelyidae Laurasichersis Mongolochelys Sichuanchelys

  † Eosiren † Eotheroides † Prototherium † Prorastomidae Pezosiren Prorastomus † Protosirenidae Ashokia Libysiren Protosiren

  Basal forms Eohippus Epihippus Erihippus Ghazijhippus Eurohippus Haplohippus Heptaconodon Pliolophus Propalaeotherium Protorohippus Orohippus Sifrhippus Xenicohippus Anchitheriinae Anchitherium Archaeohippus Desmatippus Hypohippus Kalobatippus Megahippus Mesohippus Miohippus Parahippus Sinohippus Equinae Acritohippus Merychippus

  † Eomanis Family: † Eurotamanduidae † Eurotamandua other representatives † Euromanis Incertae sedis † Pholidota sp. ( BC 16’08 ) Order: † Palaeanodonta Family: † Epoicotheriidae † Alocodontulum † Auroratherium † Dipassalus † Pentapassalus † Tubulodon Subfamily: † Epoicotheriinae † Epoicotherium † Molaetherium † Tetrapassalus † Xenocranium Family: † Ernanodontidae † Asiabradypus † Ernanodon Family: † Escavadodontidae † Escavadodon Family: † Metacheiromyidae ( paraphyletic  family) † Brachianodon † Mylanodon Subfamily: † Metacheiromyinae (paraphyletic subfamily) † Metacheiromys † Palaeanodon Subfamily: † Propalaeanodontinae † Propalaeanodon Incertae sedis † Amelotabes † Arcticanodon † Melaniella