Ringiculidae

Ringiculidae are a family of minute deep water sea snails, marine gastropod mollusks or micromollusks in the informal group Lower Heterobranchia.

Ringiculidae is the only family within the superfamily Ringiculoidea.

The shells of species in this family superficially resemble minute versions of the shells of the Cassinae.

Genera
Genera in the family Ringiculidae include:
 * Genus † Avellana d'Orbigny, 1842
 * Genus Microglyphis Dall, 1902
 * Microglyphis breviculus Dall, 1902 - Distribution America
 * Microglyphis curtulus Dall - Distribution: Patagonia
 * Microglyphis estuarinus Dall, 1908 - Distribution: West America
 * Microglyphis globularis Smith, 1875 - Distribution: Japan
 * Microglyphis japonicus T. Habe, 1952 - Distribution: Indo-Pacific
 * Microglyphis mazatlanicus Dall, 1908 - Distribution: West America
 * Microglyphis perconicus Dall, 1890 - Distribution: West America
 * Genus Pseudoringicula Lin, 1980
 * Genus Ringicula Deshayes, 1838
 * Genus Ringiculoides Minichev, 1966 - with the only species Ringiculoides kurilensis Minichev, 1966
 * Genus Ringiculopsis Chavan, 1947 - with the only species Ringiculopsis foveolata (Yokoyama, 1928)
 * Genus Ringiculospongia Sacco, 1892


 * Genera brought into synonymy:
 * Hyporingicula Habe, 1952: synonym of Microglyphis Dall, 1902
 * Plicatra F. Nordsieck, 1972: synonym of Ringicula Deshayes, 1838
 * Ringactaeon F. Nordsieck, 1972: synonym of Ringicula Deshayes, 1838
 * Ringiculadda Iredale, 1936: synonym of Ringiculina Monterosato, 1884: synonym of Ringicula (Ringiculina) Monterosato, 1884 represented as Ringicula Deshayes, 1838
 * Ringiculina Monterosato, 1884: synonym of Ringicula Deshayes, 1838