Gnathomortis
In Depth Originally thought to represent a species of Prognathodon, Gnathomortis was established as a distinct genus of mosasaur in 2020. Further reading - Prognathodon stadtmani (Mosasauridae): a new species from the Mancos Shale (Lower Campanian) of western Colorado. - Utah Geological Survey Miscellaneous Publication. 99 (1): 275–294. - M. S. Kass - 1999. - … Read more