A Nothosaur was a sea-going reptile that was able to come out onto land, and had to surface at intervals to breathe. Like all reptiles, it was covered in scales. It was alive 240-210 million years ago, during the Triassic period. It could reach up to 4 metres in length. It fed using ambush tactics. like a crocodile today, its nostrils are on the top of its head, so when its bathing it can still breathe.