Classification of the genus Sphenoceramus
G. †Sphenoceramus Böhm 1915
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†Inoceramus (Sphenoceramus) lundbreckensis McLearn 1929
†Inoceramus (Sphenoceramus) pachti Archanguelsky 1916
†Sphenoceramus elegans Sokolow 1914
†Sphenoceramus gilli Walaszczyk and Cobban 2006
†Sphenoceramus naumanni Yokoyama 1890
†Sphenoceramus orientalis Sokolov 1914
†Sphenoceramus sachalinensis Sokolov 1914