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・ Nautilus (album)
・ Nautilus (counterculture publisher)
・ Nautilus (disambiguation)
・ Nautilus (genus)
・ Nautilus (Miami Beach)
・ Nautilus (photograph)
・ Nautilus (science magazine)
・ Nautilus (secure telephone)
・ Nautilus (song)
・ Nautilus (Verne)
・ Nautilus (video game)
・ Nautilus Award
・ Nautilus belauensis
・ Nautilus Book Awards
・ Nautilus clarkanus
Nautilus cookanum
・ Nautilus Entertainment Design
・ Nautilus Head
・ Nautilus Institute for Security and Sustainability
・ Nautilus International
・ Nautilus Island, Maine
・ Nautilus macromphalus
・ Nautilus Minerals
・ Nautilus Pipeline
・ Nautilus Pompilius (band)
・ Nautilus praepompilius
・ Nautilus Productions
・ Nautilus stenomphalus
・ Nautilus UK
・ Nautilus, Inc.


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Nautilus cookanum : ウィキペディア英語版
Nautilus cookanum

''Nautilus cookanum'' is an extinct species of nautilus. It lived during the Eocene epoch. ''N. cookanum'' has been grouped into a single taxon together with extant species based on their shared shell characters.〔Ward, P.D. & W.B. Saunders 1997. (''Allonautilus'': a new genus of living nautiloid cephalopod and its bearing on phylogeny of the Nautilida ). ''Journal of Paleontology'' 71(6): 1054–1064.〕 Fossils of the species from the Late Eocene Hoko River Formation are noted as one of the two oldest occurrences for the genus.
==References==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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