In Depth
The annoying thing about Amtocephale is that it is yet another pachycephalosaur genus that is known only from skull material, specifically the thick dome. The exciting thing about Amtocephale however is that at the time of its discovery it represents what might be the oldest known pachycephalosaur genus.
Further Reading
- A new pachycephalosaurid from the Baynshire Formation (Cenomanian-late Santonian), Gobi Desert, Mongolia - Mahito Watabe, Khishigjaw Tsogtbaatar & Robert M. Sullivan - 2011.