A new batrachian and a new reptile from the Trias of Arizona

Frederic A. Lucas

Proceedings of the United States National Museum · 1904 · 18 citations · 0 references

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Abstract

The two species of fossil vertebrates to be described add two genera to the Triassic fauna of North America, one representing the large labyrinthodonts hitherto known only from Europe, the other being a new and large Cotylosaurian. 'The history of the discovery of these