Ancestors of birds - Archeopteryx

How did birds evolve? This is a difficult topic of science. Birds have soft bones that fly in the air, have few fossil occasions, so fossil records of bird roots are rare, the whole world has only discovered five fossils of primitive birds.

All five cases were discovered in Bavaria (Bavaria) of Germany, this fossil was about 150 million years ago, and proved that it was the ancestor of birds.Feather marks are very pronounced on fossils, clearly differentiating primary and secondary wing feathers, and also tail feathers. Previous limbs turn into wings and back limbs: feet have 4 fingers (3 front fingers, 1 back finger). The green collarbone resurfaced into the bone. Hip bones reach back. These features are all of modern birds.

A fossil fossil (Photo: bellarmine)

But the strange thing is, in the mouth with teeth, the tip of the wing has 3 nails. The bones of the hands and feet are separate. There is a long tail, consisting of split tail bones. These characteristics are those of reptile animals. The study found that it was a transitional intermediate delegate from reptiles to birds, so called the water bird.

Through inspection, the smallest flying speed of a nymph is 7.6 m / sec. It can beat wings, but not for long.

How did the Waterbirds reincarnate underground activities to aerial activities?

There are 2 points of view :

- First, primitive birds climb on trees, then move gradually to fly short to fly.

- Secondly, primitive birds run on 2 legs, and 2 previous limbs used to catch prey, gradually spend on developing wings.

Primitive birds, though only found on fossils, have provided evidence for the origins of birds, considered to be the ancestors of birds.

The skeleton of the waterfowl (Photo: fsteeman)