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Stroboceras
''Stroboceras'' is an extinct nautiloid named by Hyatt in 1884 that's included in the nautilid family Trigonoceratidae; the group that have rise to the Nautilidae which includes the living ''Nautilus''. ''Stroboceras'' is characterized by a loosely coiled evolute shell bearing prominent longitudinal ridges and grooves; with a variable cross section, generally higher than wide, flanks convergent on the venter, and a subcentral siphuncle. ==References==
* Barnard , 1957. Nautiloidea-Nautilida. Treatise on Invertebrate Paleontology, Part K. Geol. Soc. of America and Univ. Kansas Press. * (Sepkoski's cephalopd 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「Stroboceras」の詳細全文を読む
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