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Calotriton
''Calotriton'', or the European brook newts, is a genus of newts native to the Pyrenees and central Catalonia (Catalan Pre-coastal Range). These amphibians were formerly placed within genus ''Euproctus'', but the genus was resurrected in 2005. Instead of ''Euproctus'', they seem more closely related to ''Triturus'', their sister taxon. ==Evolution== ''Calotriton'' and ''Triturus'' are estimated to have split approximately 8 Mya ago. This may have been associated with adaptation to fast-running, well-oxygenated mountain streams (instead of ponds in ''Triturus''), leading to some superficial similarity with ''Euproctus'' in convergent evolution: strongly depressed head and body, and reduction or even absence of lungs.〔
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「Calotriton」の詳細全文を読む
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