Rock unit

Ohyamashimo

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

ElongatoolithusZhao 1975
Eggs143.1–66 million years ago
PrismatoolithusZhao and Li 1993
Eggs125.77–66 million years ago
SpheroolithusZhao 1979
Eggs121.4–66 million years ago
NipponoolithusTanaka et al. 2016
Eggs113.2–110.1 million years ago
SubtiliolithusMikhailov 1991
Eggs113.2–66 million years ago