Rock unit

Bayan Mandahu

6 dinosaur genera in Omnisaura with fossils from the Bayan Mandahu, oldest first. See all rock units.

PinacosaurusGilmore 1933
Bones143.1–66 million years ago
ProtoceratopsGranger and Gregory 1923
Bones100.5–66 million years ago
BagaceratopsMaryanska and Osmólska 1975
Bones83.6–66 million years ago
EopinacosaurusPenkalski 2026
Bones83.6–72.2 million years ago
SaurornithoidesOsborn 1924
Bones83.6–66 million years ago
VelociraptorOsborn 1924
Bones83.6–72.2 million years ago