Full reference: R. L. Nydam, J. G. Eaton, and J. T. Sankey. 2007. New taxa of transversely-toothed lizards (Squamata: Scincomorpha) and new information on the evolutionary history of "teiids". Journal of Paleontology 81(3):538-549
Parent taxon: Polyglyphanodontia according to J. C. de Carvalho and R. M. Santucci 2023
See also Nydam et al. 2007
Sister taxa: Obamadon, Polyglyphanodontidae
Subtaxa: Chamopsiidae Cryptobicuspidon Hydrargysaurus Kuwajimalla
Ecology:
Distribution:
• Clarkforkian of United States (1: Montana collection)
• Paleocene of United States (1: Montana)
• Cretaceous of Brazil (1), Canada (30: Alberta, Saskatchewan), Hungary (1), Japan (1), Mexico (1), United States (50: Colorado, Montana, New Jersey, New Mexico, South Dakota, Texas, Utah, Wyoming)
Total: 86 collections including 142 occurrences