Rock unit

Ilek

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

PsittacosaurusOsborn 1923
Bones161.5–66 million years ago
PrismatoolithusZhao and Li 1993
Eggs125.77–66 million years ago
SibirotitanAverianov et al. 2018
Bones125.77–113.2 million years ago
KiyacursorAverianov et al. 2024
Bones121.4–113.2 million years ago