As these small, wiry dinosaurs evolved, however, they grew larger, developing massive heads and eventually losing their reliance on their forelimbs.

It dates to 227 to 237 million years ago, around the time when the first mammals and dinosaurs evolved.

A tiny creature that was trapped in amber for 99 million years may tell us when dinosaurs evolved into birds.

This led to the entry of certain concepts about dinosaurs, such as the theory that dinosaurs evolved into birds and had very little in common with lizards.