Rock unit

Foremost

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

DromaeosaurusMatthew and Brown 1922
Bones110.1–66 million years ago
ParonychodonCope 1876
Bones100.5–66 million years ago
RichardoestesiaCurrie et al. 1990
Bones100.5–66 million years ago
ColepiocephaleSullivan 2003
Bones83.6–72.2 million years ago
SaurornitholestesSues 1978
Bones83.6–66 million years ago
ThanatotheristesVoris et al. 2020
Bones83.6–72.2 million years ago