[MM] Adelobasileus cromptoni
The Earliest-Known Stem Mammals
DESCRIBER Lucas & Hunt, 1999
TIME Triassic Late
Carnian
CLASS Mammalia
SUBCLASS Incertae Sedis
ORDER Incertae Sedis
FAMILY Incertae Sedis
FOSSILSITE Tecovas Formation, Dockum Group, Home Creek, Texas, United States
INFO
Adelobasileus is distinguishablefrom other stem mammals by a combination of primitive characters: lack of the stapedial muscle fossa, absence of the separation of the anterior and the posterior parroccipital preocesses, and the presence of a vestigial basisphenoid wing.