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Dinomyidae is a family of South American hystricognath rodents: the dinomyids were once a very speciose group, but now contains only a single living species, the pacarana. Several of the extinct dinomyids were among the largest rodents known to date, the bison-sized ''Josephoartigasia monesi'' and the smaller ''Josephoartigasia magna''. The dinomyids are thought to have occupied ecological niches associated with large grazing mammals due to the lack of true ungulates in South America until its later connection to North America. The modern pacarana is only modest in size, considerably smaller than the capybara. Neoepiblemidae, an entirely extinct family, may actually be part of Dinomyidae; both groups are undoubtedly closely related. ==Genera== *Family Dinomyidae * *†''Pseudodiodomus'' ''incertae sedis'' * *†''Agnomys'' ''incertae sedis'' * *Subfamily Eumegamyinae * * *†''Doellomys'' * * *†''Gyriabrus'' * * *†''Briaromys'' * * *†''Tetrastylus'' * * *†''Phoberomys'' * * *†''Colpostemma'' * * *†''Orthomys'' * * *†''Eumegamys'' * * *†''Pseudosigmomys'' * * *†''Pentastylodon'' * * *†''Eumegamysops'' * * *†''Telicomys'' * * *†''Perumys'' * * *†''Josephoartigasia'' * *Subfamily Potamarchinae * * *†''Scleromys'' * * *†''Olenopsis'' * * *†''Simplimus'' * * *†''Eusigmomys'' * * *†''Potamarchus'' * *Subfamily Dinomyinae * * *''Dinomys'' - pacarana * * *†''Telodontomys'' 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「Dinomyidae」の詳細全文を読む スポンサード リンク
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