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Cephalomyidae is an extinct family of caviomorph rodents from South America. The specific relationships of the family are uncertain, and affinities to both chinchilloid and cavioid rodents have been supported (McKenna and Bell, 1997; Vucetich et al., 1999; Kramarz, 2001, 2005). Most recently, Kramarz (2005) performed a phylogenetic analysis supporting a relationship to the Cavioidea, as represented by Eocardiidae. McKenna and Bell (1997) questioned the validity of the family, placing the cephalomyid genera then known in Dasyproctidae, but Kramarz (2001) subsequently reasserted the distinctiveness of cephalomyids. ==References== *Kramarz, A.G. 2001. Revision of the family Cephalomyidae (Rodentia, Caviomorpha) and new cephalomyids from the early Miocene of Patagonia. ''Palaeovertebrata'' 30(1-2):51-88. *Kramarz, A.G. 2005. A primitive cephalomyid hystricognath rodent from the early Miocene of northern Patagonia, Argentina. ''Acta Palaeontologica Polonica'' 50(2):249-258. (PDF fulltext ) *McKenna, Malcolm C., and Bell, Susan K. 1997. ''Classification of Mammals Above the Species Level.'' Columbia University Press, New York, 631 pp. ISBN 0-231-11013-8 *Vucetich, M.G., Verzi, D.H., and Hartenberger, J.-L. 2001. Review and analysis of the South American Hystricognathi (Mammalia, Rodentia). ''Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science'' 329(10):763-769. 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「Cephalomyidae」の詳細全文を読む スポンサード リンク
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