Further Evidence of Close Relationship of the Trematopsid and Dissorophid Labyrinthodont Amphibians with a Description of a New Genus and New Species
Vaughn, Peter Paul
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A new species of a new genus of trematopsid labyrinthodont amphibian, Ecolsonia cutlerensis, is described on the basis of a partial skull found in the Lower Permian of northern New Mexico. The basic similarities to other trematopsids, including the presence of the characteristically elongated external narial opening, are clear; but in the nature of the palate — with wide interpterygoid vacuities — Ecolsonia shows marked resemblances to the dissorophid labyrinthodonts. This reinforces earlier assessments of close relationship between the trematopsids and dissorophids.