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hippidion
''Hippidion'' (meaning ''little horse'') is an extinct genus of horse that lived in South America during the Pleistocene epoch, between two million and 10,000 years ago.
==Evolution==
''Hippidion'' has been considered a descendant of pliohippines, horses that migrated into the South American continent around 2.5 million years ago.〔 However, recent analysis of the DNA of ''Hippidion'' and other New World Pleistocene horses supports the novel hypothesis that ''Hippidion'' is actually a member of the living genus ''Equus'', with a particularly close relationship to the wild horse, ''Equus ferus''.〔〔
''Hippidion'' and other South American horses went extinct approximately 8,000 years ago. Specific archaeological recovery at the Cueva del Milodon site in Patagonian Chile demonstrates that ''Hippidion saldiasi''〔C. Michael Hogan, ''Cueva del Milodon'', Megalithic Portal, 13 April 2008 ()〕 existed in that vicinity in the era of 10,000 to 12,000 years before present. Horses did not reappear there until the 16th century, as a result of introduction by humans.
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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