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Pleuroacanthites : ウィキペディア英語版 | Pleuroacanthites
''Pleuroacanthites'' is one of two genera included in the Early Jurassic Pleuroacanthitidae and sole representative of the subfamily Pleuroacanthitinae. The shell of ''Pleuroacanthites'' is very evolute, with numerous whorls subcircular in section becoming incipiently keeled in the adult. Early whorls have parabolic nodes, later whorls are covered with oblique line which form a long ventral sinus. Sutures have lytoceratid (moss-like) lobes but more or less phylloid saddle endings. ==References==
* W.J Arkell ''et al''. Systematic Descriptions, Mesozoic Ammonoidea, Treatise on Invertebrate Paleontology, Part L (1957) p. L193
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