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Dinosaur History.
by: Mariah W., Grade: 4


Dinosaurs were 1st found in 1676. The tallest dinosaur is the Brachiossaurus. It weighs approximately 47 tons. The dinosaurs were not that smart. Their brains were the size of peas!! Some dinosaurs walked others swam or would fly. Some would crawl. Some dinosaurs had feathers. Others had scales. Most dinosaurs are reptiles. Reptilles are cold blooded. That means that they are not mammals like us. Our skin is very soft. Their skin is so hard it's like rock; super duper hard! To the meat eating dinosaurs we would be like a super, duper, soft, chewy treat-snack. All dinosaurs teeth and our teeth are made out of the material our fingernails are made of,which is called keratin. Keratin is a kind of protein. velociraptors big clow is about 5-6in long And 1/2 inchs wide. A T.rex has well over 200 bones in there body (my best guess).


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