Rock unit

Jiufotang

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

GrallatorHitchcock 1858
Footprints and traces237–100.5 million years ago
PsittacosaurusOsborn 1923
Bones161.5–66 million years ago
ChangzhousaurusXu 2026
Bones121.4–113.2 million years ago
ChuanqilongHan et al. 2014
Bones121.4–113.2 million years ago
MicroraptorXu et al. 2000
Bones121.4–113.2 million years ago