mosasaur

noun

1. A large extinct marine reptile in the family †Mosasauridae, dominant marine predator of the Cretaceous. Mosasaurs are considered to belong to Squamata, the same group that includes lizards and snakes.

   “What I find deeply disturbing, however, is that Mr. Ross could believe that the earth was created 10,000 years ago, but nevertheless write in his dissertation that mosasaurs, or marine reptiles, existed more than 65 million years ago.”

   “Mosasaurs could reach lengths of up to 17m and lived mainly in offshore waters of the Late Cretaceous.”