Rock unit

Fruitland/Kirtland

3 dinosaur genera in Omnisaura with fossils from the Fruitland/Kirtland, oldest first. See all rock units.

ParonychodonCope 1876
Bones100.5–66 million years ago
KritosaurusBrown 1910
Bones83.6–66 million years ago
TyrannosaurusOsborn 1905
Bones83.6–66 million years ago