Rock unit
St. Mary River
7 dinosaur genera in Omnisaura with fossils from the St. Mary River, oldest first. See all rock units.
- HadrosauropodusLockley et al. 2003
- EdmontosaurusLambe 1917
- AnchiceratopsBrown 1914
- EuoplocephalusLambe 1910
- MontanoceratopsSternberg 1951
- PachyrhinosaurusSternberg 1950
- TroodonLeidy 1856