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Eurymylidae is a family of extinct simplicidentates. Most authorities consider them to be basal to all modern rodents and may have been the ancestral stock whence the most recent common ancestor of all modern rodents (crown rodents) arose. However, the more completely known eurymylids, including ''Eurymylus'', ''Heomys'', ''Matutinia'', and ''Rhombomylus'', appear to represent a monophyletic side branch not directly ancestral to rodents (Meng et al., 2003). Huang et al. (2004) have argued that ''Hanomys'', ''Matutinia'', and ''Rhombomylus'' form a clade characterized by distinctive features of the skull and dentition that should be recognized as a separate family, Rhombomylidae. Eurymylids are only known from Asia. ==Classification== Modified from McKenna and Bell (1997) following generic taxonomy of Ting et al. (2002) and Huang et al. (2004) *Mirorder Simplicidentata – simplicidentates * *Family †Eurymylidae * * *†''Heomys'' * * *†''Zagmys'' * * *†''Nikolomylus'' * * *Subfamily †Eurymylinae * * * *†''Kazygurtia'' * * * *†''Eomylus'' * * * *†''Eurymylus'' * * * *†''Amar'' * * * *†''Hanomys'' * * * *†''Rhombomylus'' * * * *†''Matutinia'' * * * *†''Decipomys'' * * *Subfamily †Khaychininae * * * *†''Khaychina'' * *Order Rodentia – crown rodents (including all extant rodents) 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「Eurymylidae」の詳細全文を読む スポンサード リンク
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