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|image = Ammonite Asteroceras.jpg |image_caption = Asteroceras fossil from Dorset, England. | image2 = Asteroceras BW.jpg | image2_caption =Illustration of ''Asteroceras'' species |regnum = Animalia |phylum = Mollusca |classis = Cephalopoda |subclassis = Ammonoidea |familia = Arietitidae |genus = ''Asteroceras'' | genus_authority = }} ''Asteroceras'' is an extinct genus of cephalopod belonging to the Ammonite subclass. These fast-moving nektonic carnivores lived during the Triassic and Jurassic periods (from 205.6 to 189.6 Ma). 〔 ==Species== *''Asteroceras blakei'' Spath 1925 *''Asteroceras confusum'' Spath, 1925 *''Asteroceras obtusum'' Sowerby, 1817 *''Asteroceras reynesi'' Fucini 1903 *''Asteroceras saltriensis'' Parona 1896 *''Asteroceras smithii'' (J. dc C. Sowerby) *''Asteroceras stellare'' Sowerby 1815 *''Asteroceras turneri'' (J. dc C. Sowerby) 〔(Paleobiology Database - Asteroceras ). 2014-05-29.〕〔(Biolib ) 〕 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「Asteroceras」の詳細全文を読む スポンサード リンク
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