van der Spoel, 1972
Diagnosis
Dorsal and ventral surfaces different and well separated, dorsal aperture border curved.
Genera treated:
Genus Cavolinia Abildgaard, 1791 (emend. Philippi, 1853)
Genus Diacavolinia van der Spoel, Bleeker and Kobayasi, 1993
Genus Diacria Gray, 1847
[Table Cavoliniidae]