Family

Prismatoolithidae

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

PreprismatoolithusZelenitsky and Hills 1996
Eggs154.8–143.1 million years ago
PrismatoolithusZhao and Li 1993
Eggs125.77–66 million years ago
ProtoceratopsidovumMikhailov 1994
Eggs83.6–72.2 million years ago
SankofaLópez-Martínez and Vicens 2012
Eggs83.6–66 million years ago
SpheruprismatoolithusBray 1999
Eggs72.2–66 million years ago