사진이 적어서 정확하게 알수는 없지만 메조사우르스가 맞는 것 같습니다.

다음은 화석감정내용입니다. 참고하세요…

일반명 : 메조사우르스

학  명 : Mesosaurus

지질시대 고생대페름기(early Permian period)

원산지 : South America. Brazil

설  명 : 메조사우르스(Mesosaurus) 멸종한 초기의 파충류로 고생대 페름기에 등장했다. 그 크기는 약 1M내외이다. 메조사우르스는 최초로 물로 다시 돌아간 파충류로도 매우 중요하다. 초기 파충류는 양서류에서 육지로 올라오는 종으로 진화한것으로 보고 있는데 거의 모든 파충류는 공룡등으로 변화했지만 메조사우르스는 향수병에(?)걸려서 다시 물로 돌아가 놈이란말이다.

메조사우르스는 작은머리에 뽀족한 턱을가지고 있으며 날카롭고 매우 많은 이빨을 지니고 있었다. 또한 대륙이동설을 증명하는 화석이기도하다.

Mesosaurus is an extinct genus of anapsid reptile from the early Permian period. It was about one metre (3 ft) long. Mesosaurus was one of the first reptiles to return to the water in which its amphibian ancestors originally lived. Its feet were webbed, body streamlined, and its long tail supported a fin. Since the hind legs were much longer, they are presumed to have been used to propel the creature through the water. Its body was flexible and could easily move sideways, but it could not turn as a result of highly thickened ribs (a feature also seen in modern sea cows).

Mesosaurus had a small skull with long jaws. The nostrils were located at the top, allowing the creature to breathe with only the upper side of its head breaking the surface (similar to a crocodile). Mesosaurus's most striking feature were its numerous, thin teeth. Each tooth had its own socket, but were too thin to catch prey. Instead, they are thought to have been used to filter plankton from the water. Fossils of Mesosaurus, a crocodile- like reptile, are found in southern Africa and in South America.