Dallasaurus is a basal mosasauroid from the Upper Cretaceous of North America. Along with Russellosaurus, Dallasaurus is one of the two oldest mosasauroid taxa currently known from North America. It i
Prognathodon is an extinct genus of marine lizard belonging to the mosasaur family. It is classified as part of the Mosasaurinae subfamily, alongside genera like Mosasaurus and Clidastes. Prognathodon
P. currii skull cast at the Geological Museum in Copenhagen.
Restoration of P. lutugini.
P. overtoni (TMP 2018.042.0005) at the Royal Tyrrell Museum of Palaeontology.