Dinosaurs were appeared in 245 million years ago,and prosperity in 65 million years ago at the end of the Mesozoic reptiles.Or for the dinosaur and its contemporary plesiosaur,pterodactyl etc of fuzzy floorboard.The dinosaur in 65 million years ago at the end of the cretaceous suddenly disappear,become the earth biological evolution history of a mystery,the mystery is still no one can solution.The earth's past biological,were in the fossil record them.The Mesozoic strata,namely once found many dinosaur fossils.One can see large or present various shapes of bone.But,in the ensuing Cenozoic stratigraphy and yet entirely invisible dinosaur fossils.And turpan dinosaur in the Mesozoic era when together are destroyed.
Dinosaurs,types,physique and habits vary too.Which is bigger,can add up dozens of elephants so big,Small,but with a chicken almost.Just predatory speaking,have the tame plant-eating person
And ferocity,ceratosaurus may have element of meat ate the bears are dinosaurs.