Rock unit

Ejinhoro

3 dinosaur genera in Omnisaura with fossils from the Ejinhoro, oldest first. See all rock units.

PsittacosaurusOsborn 1923
Bones161.5–66 million years ago
SinornithoidesRussell and Dong 1994
Bones137.05–100.5 million years ago
WuerhosaurusDong 1973
Bones137.05–100.5 million years ago