翻訳と辞書 Words near each other ・ Pleurothallis myrticola ・ Pleurothallis oxapampae ・ Pleurothallis phyllocardioides ・ Pleurothallis punctata ・ Pleurothotonus ・ Pleurothyrium ・ Pleurothyrium giganthum ・ Pleurothyrium hexaglandulosum ・ Pleurothyrium obovatum ・ Pleurothyrium roberto-andinoi ・ Pleurotinae ・ Pleurotoid fungi ・ Pleurotomaria ・ Pleurotomariacea ・ Pleurotomariidae ・ Pleurotomarioidea ・ Pleurotomella ・ Pleurotomella aguayoi ・ Pleurotomella amphiblestrum ・ Pleurotomella anceyi ・ Pleurotomella annulata ・ Pleurotomella anomalapex ・ Pleurotomella araneosa ・ Pleurotomella bairdi ・ Pleurotomella bandella ・ Pleurotomella benedicti ・ Pleurotomella bureaui ・ Pleurotomella cancellata ・ Pleurotomella catharinae ・ Pleurotomella chariessa Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Pleurotomarioidea ： ウィキペディア英語版 Pleurotomarioidea Pleurotomarioidea is a superfamily of small to large marine gastropods included in the Vetigastropoda. These are the slit shells, originally named Pleurotomariacea, in keeping with the convention for naming superfamilies at the time. This updated version of the name for the taxon is usually used by students of the living Mollusca. Paleontologists often still use the name Pleurotomariacea instead. ==Evolutionary history== Forming the first evidence of crown-group gastropods when they appeared in the Upper Cambrian, the fossil record of the Pleurotomarioideans has no substantial gaps until today. The group took quite a hit at the Cretaceous–Paleogene boundary (K–T boundary), with only the Pleurotomariidae surviving the Cretaceous–Paleogene extinction event – and then only in deep waters. Living representatives of the group were first discovered in the mid-19th century, and their unusual mix of primitive and derived characters perplexed biologists. The researchers originally responded by re-working their ideas of how the gastropod lineage evolved, but with the introduction of cladistics, attempts are currently underway to fit them into a molluscan phylogeny.〔 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「Pleurotomarioidea」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.