| 翻訳と辞書 |
Rhagamys
''Rhagamys'' is an extinct genus of rodents in the subfamily Murinae, the Old World mice and rats. The genus was established by the Swiss zoologist Charles Immanuel Forsyth Major to accommodate ''Rhagamys orthodon'', commonly known as Hensel's field mouse or the Tyrrhenian field rat, which is the only species in the genus. It was endemic to the Mediterranean islands of Corsica and Sardinia, where it first appeared in the fossil record in the Late Pleistocene, and was relatively large in size, weighing up to 50 g.〔
==Taxonomy and evolution==
Fossils of another species, originally identified as ''Rhagamys minor'', and dating back to the early and middle Pleistocene, are also found on Corsica and Sardinia, but this species has been reallocated to ''Rhagapodemus''. ''Rhagamys orthodon'' seems to be most closely related to ''Rhagapodemus'' and to the field mice (''Apodemus''). Its molars are similar to those of the wood mouse (''Apodemus sylvaticus'') and the striped field mouse (''Apodemus agrarius'') but are larger and more derived, being hypsodont teeth suitable for feeding on a coarse, abrasive diet. Over time, ''Rhagamys orthodon'' increased in size and became larger than the broad-toothed field mouse (''Apodemus mystacinus'').
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「Rhagamys」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|