Rock unit

Zhonggou

6 dinosaur genera in Omnisaura with fossils from the Zhonggou, 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
ArchaeoceratopsDong and Azuma 1997
Bones121.4–110.1 million years ago
SuzhousaurusLi et al. 2007
Bones121.4–110.1 million years ago
AuroraceratopsYou et al. 2005
Bones113.2–110.1 million years ago
NanshiungosaurusDong 1979
Bones113.2–66 million years ago