New specimens of a primitive hippopotamus, Kenyapotamus coryndonae, from the Upper Miocene Nakali Formation, Kenya

Takehisa Tsubamoto; Kunimatsu Yutaka; Hideo Nakaya; Tetsuya Sakai; Mototaka Saneyoshi; Emma Mbua; Masato Nakatsukasa

doi:10.5575/geosoc.2015.0004

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New specimens of a primitive hippopotamus, Kenyapotamus coryndonae, from the Upper Miocene Nakali Formation, Kenya

Takehisa Tsubamoto, Kunimatsu Yutaka, Hideo Nakaya, Tetsuya Sakai, Mototaka Saneyoshi, Emma Mbua, Masato Nakatsukasa

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Keywords: Hippopotamidae, Kenya, Kenyapotaminae, Kenyapotamus, Miocene, Nakali Introduction

JOURNAL FREE ACCESS

2015 Volume 121 Issue 4 Pages 153-159

DOI https://doi.org/10.5575/geosoc.2015.0004

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Abstract

New dental and astragalar specimens of a primitive hippopotamus, Kenyapotamus coryndonae (Mammalia, Cetartiodactyla, Hippopotamidae, Kenyapotaminae) from the lower Upper Miocene Nakali Formation at the Nakali locality, central Kenya, are described and illustrated. The new specimens increase the known morphological and size variations of the dentition and astragalus in this primitive hippopotamid species, which is important to understand the origin and early evolution of the Hippopotamidae.

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