A few years ago, dinosaur fossils are found in Madagascar, a large island in eastern Africa. These fossils as old as the early dinosaur fossils in South America. It seems that dinosaurs ruled the earth has begun, even at 228 million years ago
Some dinosaurs ate stones. Big plant eaters, like Diplodocus, does not have the teeth of mastication and swallowing food whole intact with some gravel. Krikil help squash food in the stomach hefty dinosaur. Gravel that has been worn with dinosaur fossils found
Hadrosaurs, duck-billed dinosaurs, has a beak-like mouth that. Scalloped front is not sufficient, but at the back there is a long line of jagged cheek to chew food. Some types of hadrosaurs have more than 1000 teeth.
( source: Atlas of dinosaurs by Steve Parker)
