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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 Maastrichtian ： ウィキペディア英語版 Maastrichtian The Maastrichtian is, in the ICS geologic timescale, the latest age or upper stage of the Late Cretaceous epoch or Upper Cretaceous series, the Cretaceous period or system, and of the Mesozoic era or erathem. It spanned the interval from . The Maastrichtian was preceded by the Campanian and succeeded by the Danian (part of the Paleogene and Paleocene).〔See the timescale by Gradstein ''et al.'' (2004)〕 At the end of this period, there was a mass extinction known as the Cretaceous–Paleogene extinction event, (formally known as the Cretaceous–Tertiary extinction event). At this extinction event, many commonly recognized groups such as non-avian dinosaurs, plesiosaurs and mosasaurs, as well as many other lesser known groups, died out. ==Stratigraphic definitions== 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「Maastrichtian」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.