Rock unit

Döshuul

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

PsittacosaurusOsborn 1923
Bones161.5–66 million years ago
TrachoolithusMikhailov 1994
Eggs121.4–113.2 million years ago
OvaloolithusZhao 1979
Eggs100.5–66 million years ago