A new species of mosasaur named Tylosaurus rex — twice the length of a great white shark, with finely serrated teeth and evidence of violent combat against its own kind — has just been identified from 80-million-year-old Texas fossils that had been sitting in museums for decades

A new species of marine reptile, identified from fossils that have been sitting in various museum collections in North Texas and elsewhere for as long as several decades, has just been formally described in the Bulletin of the American Museum of Natural History. The species has been named Tylosaurus rex, with the species name meaning [...] The post A new species of mosasaur named Tylosaurus rex — twice the length of a great white shark, with finely serrated teeth and evidence of violent combat a