Dinosaur is a reptile that appeared in Mesozoic (Triassic, Jurassic and Cretaceous). The vigorous limbs, long tail and huge body are the portrayal of most dinosaurs. They mainly inhabit woodland or open areas in lakeshore plains (or coastal plains).

The discovery of dinosaur fossils has a long history. Long before the discovery of dinosaurs, Europeans knew that there were many grotesque huge bone fossils buried underground. It was not until the paleontologist Mantel discovered dinosaurs and compared them with iguanas that the scientific community initially determined that they were a group of reptiles similar to lizards but long extinct.

Extended data

1, earthworm

Tatisaurus oehleri, a herbivore of the genus Tati, was about 2 meters long and lived in the early Jurassic of Mesozoic. The fossil specimen is a tooth fragment of the left jawbone found in China.

2. Guanshi Jialing Dragon

Chialingosaurus kuani is a species of Stegosaurus, which lived in the middle of Mesozoic Jurassic. Some scholars believe that the fossil specimens of Guanjia Jialing Dragon are underage individuals, and the characteristics that can be used for classification and identification have not yet developed.

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