Abstract

An excellently preserved trimerorhachoid amphibian from the middle Wolfcamp of Kansas is described, and is made the type of a new genus Acroplous, as A. vorax, n. sp. In both its morphology and its temporal occurrence the animal serves as a link between the Pennsylvanian genera Pelion and Saurerpeton and the Permian genera Eobrachyops and Trimerorhachis. Certain fossil amphibian remains from the Appalachian region, described as Saurerpeton obtusum, are referred to Acroplous. Position of external nares and shape of skull afford room for conjecture about the habits of Acroplous. Its geological occurrence is discussed and compared with that of its Texas contemporaries.

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