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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Salamandroidea ： ウィキペディア英語版 Salamandroidea The Salamandroidea are a suborder of salamanders, referred to as advanced salamanders. The members of the suborder are found worldwide except for Antarctica, southern Sahara, and Oceania. They differ from suborder Cryptobranchoidea as the angular and prearticular bones in their lower jaws are fused, and all members use internal fertilization. The female is fertilized by means of a spermatophore, a sperm-containing cap placed by the male in her cloaca. The sperm is stored in spermathecae on the roof of the cloaca until it is needed at the time of oviposition. The earliest known salamandroid fossils are specimens of the species ''Beiyanerpeton jianpingensis'' from the Tiaojishan Formation, dated to the late Jurassic period about 157 (plus or minus 3) million years ago.〔Gao K.-Q. and Shubin, N.H. (2012). "Late Jurassic salamandroid from western Liaoning, China." ''Proceedings of the National Academy of Sciences'' (advance online publication). ()〕 ==References== 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「Salamandroidea」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.