Rock unit

Chignik

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

GrallatorHitchcock 1858
Footprints and traces237–100.5 million years ago
MagnoavipesLee 1997
Footprints and traces132.6–66 million years ago
HadrosauropodusLockley et al. 2003
Footprints and traces121.4–66 million years ago
TetrapodosaurusSternberg 1932
Footprints and traces121.4–89.8 million years ago