The fossils of the earliest reptiles are about 320 million years old. They date back to the Carboniferous period. The Carboniferous was a period in the Paleozoic era.
The turtle is the oldest known reptile.
The kiwi bird, and the tuatara, a reptile known as the 'living fossil'.
A Reptile
The oldest known, undisputed reptile is Hylonomus. It was an insectivore that looked much like a lizard and grew to a length of 8 to 12 inches. They lived 312 million years ago.
The chameleon is known for it's ability to change colors, though it is not the only reptile that can do so.
First, a thin layer of sediment hardens and forms a mold. Then, what is known as a cast is when a new layer of sediment fills in the mold breaking down the creature/ animal/fossil.
The actual species known as the fire salamander is and amphibian, not a reptile.
A crocodillian was a short lived reptile that existed for a brief period during the mesozoic. It is believed to have inhabited a sub-tropic to tropic area of high biologic productivity. It was one of the first known bipedal organisms to evolve. Based on stratigraphic and fossil evidence, record we can reconstruct it's known appearance to something similar to an aquatic werewolf.Estoban Simms, U of S
crocodile
The prehistoric animals that would become our fossil fuels lived during the Carboniferous age. Terapods four legged reptile-like creatures with backbones. Early amphibians also moved from the water to land. This age was also well known of its super sized insects.
Those would be dinosaurs
The chameleon.