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Hadropithecus
''Hadropithecus'' is a medium-sized, extinct genus of lemur, or strepsirrhine primate, from Madagascar that includes a single species, ''Hadropithecus stenognathus''. Due to its rarity and lack of sufficient skeletal remains, it is one of the least understood of the extinct lemurs. Both it and ''Archaeolemur'' are collectively known as "monkey lemurs" or "baboon lemurs" due to body plans and dentition that suggest a terrestrial lifestyle and a diet similar to that of modern baboons. ''Hadropithecus'' had extended molars and a short, powerful jaw, suggesting that it was both a grazer and a seed predator.
The monkey lemurs are considered to be most closely related to the living indriids and the recently extinct sloth lemurs, although recent finds had caused some dispute over a possible closer relation to living lemurids. Genetic tests, however, have reaffirmed the previously presumed relationship. ''Hadropithecus'' lived in open habitat in the Central Plateau, South, and Southwest regions of Madagascar. It is known only from subfossil or recent remains and is considered to be a modern form of Malagasy lemur. It died out around 444–772 CE, shortly after the arrival of humans on the island.
==Etymology==
The common names that ''Hadropithecus'' shares with ''Archaeolemur'', "monkey lemurs" and "baboon lemurs", come from their dental and locomotor adaptations, which resemble that of modern African baboons. The genus ''Hadropithecus'' is derived from the Greek words αδρος, ''hadros'', meaning "stout" or "large", and πίθηκος, ''pithekos'', meaning "ape". The species name derives from the Greek root στενο-, ''steno-'', meaning "narrow", and γναθος, ''gnathos'', meaning "jaw" or "mouth".〔 pp. 80–81, 539, 645, 648.〕
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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