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In the classical system the dinosaurs are looked as an extinct reptile's team. Paleontologists by the investigation receive the knowledge about the dinosaurs from the fossils which are delivered in the form of fossilized bones, skin and fabric impressions as well as by trace fossils.

Dinosaurs have become a share of the worldwide popular culture and play in some of the most successful books and films a role. The dinosaurs were marked by an immense form variety. Some were Herbivoren, other carnivores.

Till 2006 527 dinosaur types were academically described by a respected total number of about 1850 types. With the dinosaurs the legs stood vertically under the body, as with most mammals. Paleontologists by the investigation receive the knowledge about the dinosaurs from fossils and osseous findings play a prominent role.

The early dinosaurs probably took the niches which became free by the extinct teams. Earlier it was assumed from the fact that the dinosaurs forced back the older teams in a long competition.

Pinnate dinosaurs are rare what could be due to the fact that sensitive structures are mostly absent like skin or feathers only seldom fossilieren and so in the fossils. Although dinosaurs varied in the size strongly, dinosaurs were big as a team. The average dinosaur was according to an estimate about one to ten tonnes.

Amphicoelias is a genus of herbivorous sauropod dinosaurs that may Be the largest dinosaur ever discovered. The biggest and heaviest dinosaur who is known by good skeletal findings is of the Sauropode Brachiosaurus. The longest dinosaur known by entire skeletons is Diplodocus.

When the first dinosaurs were discovered, the scientists thought, dinosaurs are change-warm animals. Today it is thought that they might have been able to store warmth, but not to produce it directly.