mesosaur

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mesosaur

one of a group of Anapsid reptiles (order Mesosauria) from the Lower Permian which were fish-eating and looked superficially like crocodiles.
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The study focuses on mesosaurs, which were among the world's first aquatic reptiles.
Mesosaurs, and even their earlier ancestors, possibly "were not able to produce hard shelled eggs, at least for the first several million years of their evolution," lead author Graciela Pineiro, a paleontologist at Uruguay's Facultad de Ciencias, told Discovery News.
After the recent discovery of mesosaur embryos, we can state with a high degree of confidence that embryo retention developed early in amniote evolution, given that mesosaurs are among the basal-most reptiles and that they date from the Early Permian around 280 million years ago," she asserted.
He is of a generation sufficiently divorced from the old pulps that he's the dolphin among mesosaurs here.
On December 9, Christie's London showroom is holding an auction that will include small mesosaurs, aquatic lizards from some 250 million years ago.