Fortipecten Yabe & Hatai, 1940
YABE, H. & K. HATAI. 1940. A note on Pecten (Fortipecten, subgen. nov.) takahashii Yokoyama and its bearing on the Neogene deposits of Japan. The Science Reports of the Tōhoku University [2nd. Series - Geology], 21 (2): 147-160, pls. 34, 35.
«Thus, in strict sense the present specimens are not referable to the subgenera Patinopecten Dall, Vertipecten Grant and Gale, and Lyropecten. Conrad, differing from Patinopecten by the strong convexity of right valve, minor striations in the valleys of both right and left valves, and by the left valve possessing intercalaries even though the ribs of right valve are not sulcated, differing from Vertipecten by the left valve not being strongly convex and by right valve not being nearly flat, and differing from Lyropecten by unequal convexity of the valves, weak cardinal grooves, and the ears less strongly sculptured. And to refer the present specimens to Patinopecten as done by previous Japanese workers, makes necessary a redefinition of the subgenus, Such a procedure would, however, not only cause further confusion to the conchologist, but also make more complex the morphological characters of the Pectinidae. Under the circumstances, we here propose a new subgeneric name, Fortipecten, with the following description, which takes into account all of the subgeneric characters (type:— Pl. XXXIV (1), Figs. 4-6)»
HISAKATSU YABE & KOTORA HATAI , 1940
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Pecten takahashii n. sp.; M. Yokoyama, 1930, Tertiary Mollusca from south Karafto, plate 79, figures 1,2.
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