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| regnum = Animalia | phylum = Mollusca | classis = Cephalopoda | subclassis = Ammonoidea | ordo = Ammonitida | superfamilia =Ancylocerataceae (?) | familia = Douvilleiceratidae | subfamilia = Douvilleiceratinae | genus = ''Astiericeras'' | genus_authority = Parona & Bonarelli. 1896 | subdivision_ranks = Species | subdivision = *see text }} ''Astiericeras'' is an ammonite from the Lower Cretaceous, the shell of which is evolute, stout; outer whorl with strong, well spaced, transverse ribs that cross smoothly over the broad venter; early whorls with lateral tubercles. The outer, mature whorl separates from the coil but hooks back quickly, referred to as a heteromorph. ''Astiericeras'' is generally considered to be a douvillieceratid, however according to W. J. Kennedy, the genus may instead be a scaphitoid. ==References== 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「Astiericeras」の詳細全文を読む スポンサード リンク
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