Tylosaurus

Tylosaurus (Greek τυλος/tylos "protuberance, knob" + Greek σαυρος/sauros "lizard") was a mosasaur, a large, predatory marine lizard closely related to modern monitor lizards and to snakes.
Category:Animals
Category:Creatures
Category:Mosasaurs of north america
Category:Mooreville chalk
Category:Russellosaurins
Category:Fossil taxa described in 1872
Category:Reptiles