What are mosasurus?

Why is the Cretaceous - Tertiary period also called the K-T period? Is 'dragon' a compound word? Why did dinosaurs did not last very long? What is the length of Iguanodon? Who would win tyrannosaurus vs velociraptor? What do dragons not like? What did doedicurus eat? Which Doctor Who dalek figure is the rarest? Where there fish before dinosuars? What is the largest carnivore dinosaur? Is dinosaurs part of science? What does not belong Velociraptor Diplodocus Tyrannosaurus Megalosaurus? What percentage of animal life other than the dinosaur went extinct along with the dinosaur? What does Prehensile mean? The Jurassic period was part of this era? What is Fossil's vision statement? What changes do you think a visitor to the Rockies might see a million years from now? Which dinosaurs were the stegosaurus' preaditor? Are John Topsell's dragons real? What does a velociraptor diplodocus and megalosaurus classify as?