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Description
Crassigyrinus scoticus is an unusual amphibian from the early Carboniferous (Visean) of Scotland. This aquatic predator had a high skull with a short muzzle, which provided quite a strong bite. By the way, the skull of Crassigyrinus literally riddled with holes. It is assumed that the head was covered with cutaneous outgrowths . Marginal teeth are small, but the Palatine teeth are quite strong and sharp. The victim, caught in the jaws of a voracious predator, was firmly seized. Weak skeleton is an evidence of aquatic lifestyle, the body is long and eel-like. Tail flattened laterally, helping to increase the speed during shots at the victim. An interesting feature of Crassigyrinus is a very small limb. The front legs are so small that shoulder length was less than the length of the orbit, the rear legs were slightly longer. Crassigyrinus reached a length of about 2 meters, it is assumed that it occupied the niche currently occupied by crocodiles, according to the way of life he was something of a cross between a giant alamander and a pike. This secondary-aquatic animal, despite his primitive and very small legs.

Here I depicted an adult, preying on a larva of the same species. The appearance of the larva is completely speculative. However, I decided to depict her four legs of approximately equal sizes. If this characteristic of larvae Crassigyrinus really was, that is atavism.

Description
Crassigyrinus scoticus is an unusual amphibian from the early Carboniferous (Visean) of Scotland. This aquatic predator had a high skull with a short muzzle, which provided quite a strong bite. By the way, the skull of Crassigyrinus literally riddled with holes. It is assumed that the head was covered with cutaneous outgrowths . Marginal teeth are small, but the Palatine teeth are quite strong and sharp. The victim, caught in the jaws of a voracious predator, was firmly seized. Weak skeleton is an evidence of aquatic lifestyle, the body is long and eel-like. Tail flattened laterally, helping to increase the speed during shots at the victim. An interesting feature of Crassigyrinus is a very small limb. The front legs are so small that shoulder length was less than the length of the orbit, the rear legs were slightly longer. Crassigyrinus reached a length of about 2 meters, it is assumed that it occupied the niche currently occupied by crocodiles, according to the way of life he was something of a cross between a giant alamander and a pike. This secondary-aquatic animal, despite his primitive and very small legs.

Here I depicted an adult, preying on a larva of the same species. The appearance of the larva is completely speculative. However, I decided to depict her four legs of approximately equal sizes. If this characteristic of larvae Crassigyrinus really was, that is atavism.