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''Uraloclymenia'' is an extinct ammonoid cephalopod genus from the Late Devonian, Famennian stage. The type species is ''Uraloclymenia volkovi'' Bogoslovskii, 1977 The shell of ''Uranloclymenia'' is lenticular, with a narrow umbilicus and usually free of ribs. Constrictions are absent. The suture has a very broad, shallow ventral lobe, a shallowly rounded lateral lobe, an inconspicuous umbilical lobe inside the umbilical seam, and an internal lobe on the dorsum. As for all clymeniids, the siphuncle is along the dorsum. ==References== *( Taxonomy, Goniat online ) 8/21/2010 *(Paleobiology Database-Uraloclymenia ) 8/21/2010 *W. B. Saunders, D. M. Work, S. V. Nikolaeva (1999). "Evolution of complexity in Paleozoic ammonoid sutures". Science 286 (5440): 760–763. 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「Uraloclymenia」の詳細全文を読む スポンサード リンク
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