†FAMILY CORONULIDAE LEACH, 1817

Diagnosis: Wall of six plates, without a median longitudinal sulcus; terga vestigial; opercular plates lacking in Xenobalanus; borders of mantle forming a hood over the cirri; single row of wall tubes formed by infoldings of outer lamina against the sheath.

Cetolepas Zullo, 1969 (one species)

Cetopirus Ranzani, 1817 (two species)

Chelolepas Ross & Frick, 2007 (one species)

† Coronula Lamarck, 1802 (Miocene–Recent) (eight species)

Cryptolepas Dall, 1872 (two species)

Cylindrolepas Pilsbry, 1916 (two species)

†† Emersonius Ross, 1967 (Eocene) (one species)

Platylepas Gray, 1825 (nine species)

Stomatolepas Pilsbry, 1910 (six species)

Tubicinella Lamarck, 1802 (two species)

Xenobalanus Steenstrup, 1852 (one species)