Abstract

A new genus and species of eutherian mammal having uncertain affinities is described from an incomplete lower jaw found in the late Paleocene Paskapoo Formation of central Alberta, Canada. The new mammal is characterized by a shallow dentary, no lower incisors, an enlarged lower canine, and a relatively long diastema between the canine and the first lower premolar, which is premolariform and two rooted. Closest resemblance of this new mammal is to epoicotheriid palaeanodonts (?Pholidota), although it differs in several, perhaps important, features from known epoicotheriids. If the Paskapoo mammal is a palaeanodont, it is the oldest known, constituting the most northerly record for the suborder, and the first from Canada.

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