Modulidae

Modulidae, common name modulids, is a family of small sea snails, marine gastropod molluscs in the superfamily Cerithioidea.

According to the taxonomy of the Gastropoda by Bouchet & Rocroi (2005) the family Modulidae has no subfamilies.

Genera
Genera within the family Modulidae include:
 * Conomodulus Landau, Vermeij & Reich, 2014
 * † Incisilabium Cossmann, 1918
 * Indomodulus Landau, Vermeij & Reich, 2014
 * † Laevimodulus Landau, Vermeij & Reich, 2014
 * † Modulostylina Bandel, 2006 - with the only species Modulostylina waageni Kittl, 1884 - from Late Triassic
 * Modulus Gray, 1840 - the type genus of the family Modulidae
 * † Psammodulus Collins, 1934
 * Trochomodulus Landau, Vermeij & Reich, 2014
 * Synonyms:
 * Aplodon Rafinesque, 1819 : synonym of Modulus Gray, 1842 (senior synonym of Modulus which, however, is in prevailing usage)