Family

Spheroolithidae

3 dinosaur genera in Omnisaura classed in Spheroolithidae by the Paleobiology Database, oldest first. See all families.

GuegoolithusMoreno-Azanza et al. 2014
Eggs139.1–121.4 million years ago
SpheroolithusZhao 1979
Eggs121.4–66 million years ago
ParaspheroolithusZhao 1979
Eggs100.5–66 million years ago