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''Eophyllites'' is an ammonoid cephalopod from the Lower Triassic and a predecessor of genera like ''Monophyllites'' and ''Ussurites''. The shell of ''Eophyllites'' is evolute, discoidal; whorls compressed, deeply embracing; flanks gently convex, converging on a narrowly rounded venter. Sutures basically ceratitic; ventral lobe wide, divided by a high siphonal saddle; Lobesjagged, 1st lateral larger than the second; saddles monophyllic, smooth and rounded. Related ''Paleophylites'' from the same age is ribbed on the outer flanks and lobes in the suture are more terminally digitate. ==References== * W.J. Arkell, et al, 1957. Mesozoic Ammonoidea, Treatise on Invertebrate Paleontology, Part L. Geological Society of America and University of Kansas Press * (Sepkoski's list of Cephalopod Genera ) 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「Eophyllites」の詳細全文を読む スポンサード リンク
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