Abstract

A large vertebrate fauna from the Upper Pliocene of Kansas showing evidence of members of a boreal fauna associated with that of a more southern fauna. Indicating the climatic change which appeared in advance of the Pleistocene glaciation. Five classes of vertebrates are represented in the fauna. The paper treats only the Mammalia, which is represented by 7 orders, 14 families, 23 genera and 10 species of which the following are described as new: Sorex taylori sp. nov.; Eocastoroides lanei gen. et sp. nov.; Peromyscus eliasi sp. nov.; Sigmodon intermedius sp. nov.; Pliolemmus antiquus gen. et sp. nov.; Pliophenacomys subgen. nov.; Phenacomys primaevus sp. nov.; Kansasomys meadensis gen. et sp. nov.; Neondatra kansasensis gen. et sp. nov. With text figures.

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