The Ulan Shireh Formation is a geologic formation in Inner Mongolia, China. It preserves fossils dating back to the Middle Eocene, including mammals of the Irdinmanhan land mammal age. The formation is correlated with the Irdin Manha Formation, also in Inner Mongolia, and is believed to have been deposited in the same timeframe.
Mammal fossils
Artiodactyla Genus/familySpeciesNotes/affinitiesImagesGobihyusG. orientalis?A choeropotamid
Didymoconidae Genus/familySpeciesNotes/affinitiesImagesKennatheriumK. shirehensisA didymoconid
Perissodactyla Genus/familySpeciesNotes/affinitiesImagesAcrotitanA. ulanshirehensisA brontothereBreviodonB. minutusA lophialetidB.? sp.DesmatotitanD. tukhumensisA brontothereEpimanteocerasE. formosusA brontothere. Ye (1983) reported both E. formosus and Dolichorhinoides angustidens, species now regarded as synonyms.ForstercooperiaF. ulanshirehensisA paracerathere. Reported by Ye (1983) as F. cf. grandis. Described as F. ulanshirehensis in 2018.LushiamynodonL. sharamurensnsisAn amynodont. The genus Lushiamynodon may be a synonym of Sharamynodon L. sharamurensis is based on fragmentary remains.MicrotitanM. mongoliensisA brontothereProtitanP. grangeriA brontothere; previously treated under the synonym P. bellusRhodopagusR. pygmaeusA hyracodont (?)SimplaletesS. ulanshirehensisA lophialetidTeleolophusT. mediusA deperetellidTriplopus?T.? proficiensA rhinocerotoidZhongjianoletesZ. chowiA lophialetidZ. sp.
Lagomorphs Genus/familySpeciesNotes/affinitiesImagesPalaeolaginaePalaeolaginae indet.ShamolagusS. grangeriA leporid
Rodents Genus/familySpeciesNotes/affinitiesImagesAdvenimusA. bohliniA ctenodactylidcf. A. sp.YoumysY. wejingensisAn ischyromyid (?) References