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New Ireland forest rat : ウィキペディア英語版 | New Ireland forest rat
The New Ireland forest rat (''Rattus sanila'') is a large rodent in the family Muridae. It is endemic to New Ireland, in the Bismarck Archipelago, Papua New Guinea. ==Description== ''Ratus sanila'' is known only by the discovery of some 7 subfossil fragments of jaw dated to over 3000 years old. The molars of this particular species are broad and have a very complex structure of the cusp. The diastema is also longer than in other species of the genus ''Rattus'' suggesting a separate species which may be a relict of an archaic or ancestral dispersal of ''Rattus'' stock to New Guinea and Australia. This species probably still survives in some primary forest.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「New Ireland forest rat」の詳細全文を読む
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