Leptosaurus
Encyclopedia
Leptosaurus was a Sphenodontid
Sphenodontia
Sphenodontia is an order of lizard-like reptiles that includes only one living genus, the tuatara , and only two living species...

 from the Mesozoic Era.

Classification

Leptosaurus was named a member of the Sphenodontidae family by Renesto and Viohl in 1997.
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