Rock unit

Iren Dabasu

8 dinosaur genera in Omnisaura with fossils from the Iren Dabasu, oldest first. See all rock units.

BactrosaurusGilmore 1933
Bones100.5–66 million years ago
ParaspheroolithusZhao 1979
Eggs100.5–66 million years ago
UrbacodonAverianov and Sues 2007
Bones100.5–72.2 million years ago
CaenagnathasiaCurrie et al. 1994
Bones93.9–89.8 million years ago
AlectrosaurusGilmore 1933
Bones83.6–72.2 million years ago
ArchaeornithomimusRussell 1972
Bones83.6–72.2 million years ago
GilmoreosaurusBrett-Surman 1979
Bones83.6–72.2 million years ago
NeimongosaurusZhang et al. 2001
Bones83.6–72.2 million years ago