Synonym: Megasaurus Gilmore 1928
Full reference: C. W. Gilmore. 1928. Fossil lizards of North America. Memoirs of the National Academy of Sciences 22(3):1-201
Parent taxon: Monstersauria according to S. M. Hamilton et al. 2023
See also Bryant 1989, Carroll 1988, Clos 1995, Estes 1964, Estes 1983, Estes and Berberian 1970, Gao and Fox 1996, Gilmore 1928, Hay 1930, Longrich et al. 2012, McDowell and Bogert 1954, Peng et al. 2001 and Yi and Norell 2013
Sister taxa: Asprosaurus, Chianghsia, Estesia, Eurheloderma, Gobiderma, Lowesaurus, Morohasaurus, Paraderma, Primaderma
Subtaxa: Palaeosaniwa canadensis
Ecology:
Distribution:
• Paleocene of Canada (1: Alberta collection)
• Cretaceous of Canada (18: Alberta, Saskatchewan), Mexico (2), United States (5: Montana, North Dakota, South Dakota, Wyoming)
Total: 26 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.