Rock unit

Miaogou

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

GobisaurusVickaryous et al. 2001
Bones121.4–100.5 million years ago
ProbactrosaurusRozhdestvensky 1966
Bones121.4–100.5 million years ago
ProtoceratopsGranger and Gregory 1923
Bones100.5–66 million years ago