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Kenyapotamus
''Kenyapotamus'' is a possible ancestor of living hippopotamids that lived in Africa roughly 16 million to 8 million years ago during the Miocene epoch. Its name reflects that its fossils were first found in modern-day Kenya.
Although little is known about ''Kenyapotamus'', its dental pattern bore similarities to that of the genus ''Xenohyus'', a European tayassuid from the Early Miocene. This led some scientists to conclude that hippopotami were most closely related to modern peccaries and pigs.〔Petronio, C. (1995): Note on the taxonomy of Pleistocene hippopotamuses. ''Ibex'' 3: 53-55. (PDF fulltext )〕
Recent molecular research has suggested that hippopotamids are more closely related to cetaceans than to other artiodactyls. A morphological analysis of fossil artiodactyls and whales, which also included ''Kenyapotamus'', strongly supported a relationship between hippopotamids and the anatomically similar family Anthracotheriidae. Two archaic whales (''Pakicetus'' and ''Artiocetus'') formed the sister group of the hippopotamid-anthracotheriid clade, but this relationship was weakly supported.
==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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