Provides protection from abrasion, as reptile moves over land. During the Carboniferous era, there were many amphibians; the first reptile evolved from labyrinthodont ancestor. Amniotic egg appears ...

Provides protection from abrasion, as reptile moves over land. During the Carboniferous era, there were many amphibians; the first reptile evolved from labyrinthodont ancestor. Amniotic egg appears ...

The fossil was in the collection of fossil collector, Martin Rigby, who thought the specimen might be a block of embryos. Dean confirmed the suspicion and the specimen was acquired by the Yorkshire ...

A large flap extends to the left, from just below the head to the middle of the embryo. A segmented bony structure runs the length of the embryo on the right. The reptile embryo is much longer and ...

These experiments, along with computer simulations that further confirmed the laboratory findings, revealed normal Nile ...

One of the earliest signs of gastrulation in reptiles, birds and mammals (amniotes) is the appearance of a thickening at the midline of the developing embryo, the primitive streak. Here ...

So too it turns out were the city's flora and fauna - including a pregnant tortoise with her egg. Archaeologists found the reptile's remains buried under ash and rock where it had lain ...