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Sinotitinae
Sinotitinae is one of three subfamilies of the Dimeroceratidae, a member of the Goniatitida, an extinctorder of ammonoid cephalopods from the Paleozoic. The two comprised genera, ''Sinutites'' and ''Sunites'' have broad, crescent shaped whorl sections, but one, ''Sinutites'' has a dorsal siphuncle while in the other, ''Sunites'' the siphuncle is ventral. ==References==
* (Sinotitinae entry on the Paleobiology Database ) 5/26/12
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「Sinotitinae」の詳細全文を読む
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