Mosasaurus is the type genus of the Mosasauridae, an extinct group of aquatic squamate reptiles. It lived from about 82 to 66 million years ago during the Campanian and Maastrichtian stages of the Lat
TM 7424, the first known specimen of M. hoffmannii
M. missouriensis holotype, with the Harlan snout (MNHN 9587) attached to the Goldfuss skull (RFWUIP 1327); drawn in 1834 and 1845 respectively
An 1854 depiction of Mosasaurus in Crystal Palace Park
Eremiasaurus is a genus of mosasaurs, an extinct group of marine reptiles, who lived during the Maastrichtian stage of the Late Cretaceous. The first known fossils of this taxon were teeth discovered
Eremiasaurus heterodontus tooth 1
Eremiasaurus heterodontus tooth 2