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A new species of beaver (Rodentia, Castoridae) from the Middle Oligocene (Orellan) of Nebraska
Published online by Cambridge University Press: 14 July 2015
Abstract
Agnotocastor readingi n. sp., from the Orellan of Nebraska, is intermediate in size between the Chadronian A. galushai Emry from Wyoming and the Orellan A. coloradensis Wilson from Colorado. It differs slightly in dental and mandibular morphology from these latter species and cannot be transitional between them. The simplification of the dentition in A. readingi may indicate a position ancestral to the Whitneyan A. praetereadens Stirton from South Dakota.
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