Miniature dinosaurs into birds

Dinosaurs not only did not become extinct, but they were also crowded to about 10,000 species today, in the form of birds.

>>> Discover new carnivorous dinosaur fossils in Canada

Velociraptor dinosaurs at the end of the Cretaceous period - (Photo: Wikimedia Common)

To draw the conclusion, the international team led by Oxford University (UK) and Ontario Royal Museum (Canada) estimated the body weight of 426 dinosaurs based on the thickness of the leg bones.

Results showed that dinosaurs rapidly amplified body size after their appearance, about 220 million years ago, according to a report on PLOS Biology.

However, the tendency later slowed down, and some species evolved towards turning into birds, continuing to change body size until 170 million years ago, creating unprecedented biodiversity.

These include Velociraptor speed bird dinosaurs, birds of all kinds and other forms, weighing between 15g and 3 tons, eating meat, plants and omnivores.

For a long time, these dinosaurs shrink in size to turn into birds, continue to evolve and be ready to face other biological challenges.