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| image = | regnum = Animalia | phylum = Mollusca | classis = Cephalopoda | ordo = Prolecanitida | familia = Darvasiceratidae | genus = ''Darvasiceras'' | genus_authority = Leonova, 1990 | subdivision_ranks = Species 〔 | subdivision = * ''D. mirum'' }} ''Darvasiceras'' is a prolecanitid ammonoid cephalopod from the Early/Lower Permian included in what is now the superfamily Medlicottioidea. The type species is ''Darvisciceras minum''. The shell of ''Darvasiceras'' is discoidal, moderately involute in adult stages; the venter narrow, smooth, and flat; the umbilicus shallow and small. The external portion of the suture consists of a small ventral and five umbilical lobes (per side). Lobes are weakly developed, are neither deep nor wide, and are separated by extremely wide, rounded saddles. The first two umbilical lobes are bifid, prongs being weakly developed. ==References== ;Notes ;Web links * Genus ''Darvaciceras'' in (GONIAT online ) 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「Darvasiceras」の詳細全文を読む スポンサード リンク
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