Rock unit

Patuxent

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

BrontopodusFarlow et al. 1989
Footprints and traces174.7–85.7 million years ago
MegalosauropusKaever and Lapparent 1974
Footprints and traces154.8–100.5 million years ago
AmblydactylusSternberg 1932
Footprints and traces125.77–93.9 million years ago
GypsichnitesSternberg 1932
Footprints and traces121.4–100.5 million years ago
HadrosauropodusLockley et al. 2003
Footprints and traces121.4–66 million years ago
HypsiloichnusStanford et al. 2004
Footprints and traces121.4–113.2 million years ago
OrnithomimipusSternberg 1926
Footprints and traces121.4–66 million years ago
TetrapodosaurusSternberg 1932
Footprints and traces121.4–89.8 million years ago