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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 Large ornamented Ediacaran microfossil ： ウィキペディア英語版 Large ornamented Ediacaran microfossil Large ornamented Ediacaran microfossils (LOEMs) are microscopic acritarchs, usually over 100 μm in diameter, which are common in sediments of the Ediacaran period, . They largely disappear from the Ediacaran fossil record before , roughly coeval with the origin of the Ediacara biota. They differ from Palaeozoic microfossils in many respects; they are larger, often have internal contents, have a differently-constructed cell wall, and differ in shape.〔 ==Affinity== The affinity of LOEMs is a matter of current research. Like the resting cysts of some animals, LOEMs have three layers in their cell walls.〔 If the LOEMs do represent animal resting stages, this would be consistent with frequent periods of oceanic anoxia in the Ediacaran, which disappear in the Cambrian.〔 They are much larger than any known dinoflagellate, and dinoflagellate biomarkers are absent in the Ediacaran.〔 Green alga-related spores and cycts are generally differently or un-ornamented, and an order of magnitude smaller in diameter.〔 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「Large ornamented Ediacaran microfossil」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.