Diplocaulus is an extinct genus of Leponspondyl amphibian who lived in the early Permian period, 270 million years ago. They had a arrow-shaped head, suggesting that this might have served better to swim in the water by moving the water to the sides like a shark or that depredadrores could not swallow. They measured about one meter in length. The first specimen was discovered in 1877 by Edward Cope in Texas called "Bone Wars".
This prehistoric animal ate fish and insects, and lived near water because it was an amphibian and used water as a roast for her eggs.
It looks like the Gerrothorax, sharing certain characteristics suchas this head shape, somewhat more pronounced in the Diplocaulus and eyes in a higher position inthe head.
Gerrothorax is an extinct genus of amphibian temnospondyl who lived in the late Triassic period (about 210 million years ago) in what is now Germany and Greenland. Reached an approximate length of 1 meter. Their bodies are flattened, suggesting they were hiding under the sand or mud at the bottom of rivers and lakes as potential victims stalked her large eyes focused upward. The skull had a peculiar way with angular protrusions on both sides. This geometry of the skull is reminiscent of the genus Diplocaulus, but less developed.
Fossils show that the species of this genus were pedomórficas, keeping three pairs of gills also in the adult stage, which allowed them to breathe underwater. This feature also found in some current caudate, as in certain species of the family and Ambystomatidae Mudpuppy.
Curiosity: The lower jaw was fixed Gerrothorax and chewing had to raise his head and drop it. That is, exactly the opposite of what we do and almost all the animals of creation.