ALMAENA Samoylova. 1940
type species: Almaena taurica Samoylova,1940; OD(M).Almaena Samoylova. 1940(*2720), p. 377.
Kelyphistoma Keijzer.1945(*1668), p. 207; type species:Kelyphistoma ampulioloculata Keijzer. 1945: OD.Planalinella Sigal, 1949 (*2915), p. 158; type species:Planalinella escornebovensis Sigal. 1949; OD. Almaena (Planalinella) Sigal, 1950(*2916)), p. 70 (nom.trans].).Almaena (Kelyphistoma) Sigal, 195012916). p. 71 (nom. transl. ).Test laterally compressed, enrolled in a low trochospiral to nearly planispiral coil, bievolute, commonly eight to nine chambers in the final whorl, sutures curved to nearly straight, thickened and may be elevated, periphery asymmetrically bicarinate, one keel lying in the peripheral plane and the other paralleling the periphery a short distance to one side: wall calcareous, coarsely perforate. with non-perforate peripheral keels, apertural face and septa, surface smooth or may have elevated sutures: aperture oval to slitlike, interiomarginal and equatorial but may be slightly asymmetrical, with narrow bordering lip, a secondary slitlike opening between the two keels at the peripheral angle, bordered by an imperforate lip and closed in earlier chambers by additional shell material. U. Eocene to Miocene; France: Netherlands: Germany: Austria: Hungary; USSR: Crimea: Cuba.