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

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