Polydolopimorphia Cocatherium List of prehistoric mammals Stagodontidae Asiatherium Pappotherium Sinodelphys Atokatheridium Chulpasia Andinodelphys Australohyaena Deltatheroides Gurlin Tsav skull Deltatheridium Antarctodolops Herpetotherium Arminiheringia Unnuakomys Peratherium Fredszalaya Siamoperadectes Scalaridelphys Argyrolagus Arcantiodelphys Prothylacinus Proborhyaenidae Anatoliadelphys Hondalagus Mayulestes Deltatheroida Mimoperadectes Alphadontidae Paraborhyaena Proborhyaena Patagosmilus Tsagandelta Oklatheridium Nanocuris Albertatherium Maastrichtidelphys Callistoe Holoclemensia Gurbanodel…

lta Herpetotheriidae Lotheridium Eodelphis Pharsophorus Alphadon Bonapartherium Pucadelphys Peradectes Borhyaena Peradectidae Protalphadon Thylacosmilidae Cladosictis Borhyaenidae Hondonadia Deltatheridiidae Epidolops Sulestes Amphiperatherium Thylacosmilus Sparassodonta Didelphodon Casamayoran