Mosasaurs are an extinct group of large aquatic reptiles within the family Mosasauridae that lived during the Late Cretaceous. Their first fossil remains were discovered in a limestone quarry at Maast
The ammonite Placenticeras showing punctures caused by the bite of a mosasaur, Natural History Museum of Los Angeles County
Scales of Tylosaurus proriger (KUVP-1075)
Fibrous tissues and microstructures recovered from Prognathodon specimen IRSNB 1624
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
Mosasaur
…was Dallasaurus turneri, which was less than 1 m (3.3 ft) long. Larger mosasaurs were more typical, with many species growing longer than 4 m (13 ft). Mosasaurus hoffmannii, the largest known species reached up to 17 m (56 ft), but it has been considered to be probably overestimated by Cleary et al. (2018). Mosasaurs had…
Mosasaurus hoffmannii skeleton
TM 7424, the first known specimen of M. hoffmanni
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