Genus Flexopecten F. Sacco, 1897
(3-7-6-2-2-1-4-T1-11-0-0-0-0-0) Syn. Flexipecten Oppenheim, 1903; Glabropecten F. Sacco, 1897; Lissopecten A. E. Verrill, 1897; Proteopecten T. A. Monterosato, 1899 Ref. Vaught, 1989 p 119