User:Raghav Verma

Dinosaurs:

Dinosaurs were a group of prehistoric reptiles that ruled the land for about 150 million years. The Age of Dinosaurs is called the Mesozoic Era. This huge time span is broken down into three smaller chunks of time- the Triassic, Jurrasic and Cretaceous periods.

Triassic Period (251-200) mya

The dinosaurs first appeared in the Triassic Period. Fossils of the first known dinosaurs date back to the mid- Triassic Period about 230 mya. As the period came to an end, the dinosaurs had started become stronger than their reptile cousins because with an upstraight stance, they could run faster and further.

Jurrasic Period (200-145) mya

During the Jurrasic Period, dinosaurs reached their greatest size and spread to the world's major continents. Huge, long- necked herbivors were hunted by fierce, powerful carnivores. The biggest dinosaurs were the sauropods or "lizard feet". The Jurrasic Period also saw the first bird, Archaeopteryx

Cretaceous Period(145-65)mya

The dinosaurs were at their most varied during the Cretacous Period. The ornithopods or "bird feet" quickly became the main plant eaters. The carnivores also became more varied with small, but deadly types such as Deinonychus.