List of the Cenozoic life of Utah List of the Cenozoic life of Wyoming 2013 in paleomammalogy List of prehistoric mammals Peradectidae Stagodontidae Asiatherium Pappotherium Sinodelphys Atokatheridium Chulpasia Andinodelphys Australohyaena Deltatheroides Gurlin Tsav skull Deltatheridium Peratherium Fredszalaya Siamoperadectes Arminiheringia Arcantiodelphys Antarctodolops Herpetotherium Polydolopimorphia Scalaridelphys Argyrolagus Unnuakomys Prothylacinus Proborhyaenidae Deltatheroida Mimoperadectes Hondalagus Anatoliadelphys Mayulestes Alphadontidae Paraborhyaena Proborhyaena Herpetotheriidae Oklatheridium Albertatherium Nanocuris Tsagandelta Patagosmilus Callistoe Holoclemensia Gurbanodelta Maastrichtidelphys Eodelp…

phis Lotheridium Pharsophorus Alphadon Pucadelphys Peradectes Borhyaena Bonapartherium Protalphadon Thylacosmilidae Borhyaenidae Hondonadia Deltatheridiidae Epidolops Sulestes Cladosictis Amphiperatherium Thylacosmilus Sparassodonta Didelphodon Bridger Formation