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Apoderoceras : ウィキペディア英語版 | Apoderoceras
|regnum = Animalia |phylum = Mollusca |classis = Cephalopoda |subclassis = Ammonoidea |genus = ''Apoderoceras'' |genus_authority = |subdivision_ranks = |subdivision = }} ''Apoderoceras'' is an extinct genus of cephalopod belonging to the Ammonite subclass. == Biostratigraphic significance == The International Commission on Stratigraphy (ICS) has assigned the First Appearance Datum of genus ''Apoderocerasas'' and of ''Bifericeras donovani'' the defining biological marker for the start of the Pliensbachian Stage of the Jurassic, 190.8 ± 1.0 million years ago.
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「Apoderoceras」の詳細全文を読む
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