Family

Pachycephalosauridae

7 dinosaur genera in Omnisaura classed in Pachycephalosauridae by the Paleobiology Database, oldest first. See all families.

AmtocephaleWatabe et al. 2011
Bones100.5–83.6 million years ago
AcrotholusEvans et al. 2013
Bones85.7–83.6 million years ago
BrontotholusWoodruff et al. 2025
Bones83.6–72.2 million years ago
ColepiocephaleSullivan 2003
Bones83.6–72.2 million years ago
ForaminacephaleSchott and Evans 2017
Bones83.6–72.2 million years ago
SphaerotholusWilliamson and Carr 2003
Bones83.6–66 million years ago
AlaskacephaleSullivan 2006
Bones72.2–66 million years ago