Retusidae

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Retusidae
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Orthogastropoda
Superorder: Heterobranchia
Order: Opisthobranchia
Suborder: Cephalaspidea
Superfamily: Philinoidea
Family: Retusidae
Thiele, 1926
Genera

See text.

Retusidae is a family of small sea snails, marine opisthobranch gastropod mollusks. They are headshield slugs, in the suborder Cephalaspidea.

[edit] Description

The shells are small and cylindrical, with a spire that may vary from slightly elevated to sunken. The columella is smooth or with a weak plait. The surface is smooth or with weak spiral striations.

There is no gill, radula or operculum.

[edit] Genera within the family Retusidae

  • Coleophysis
  • Cylichnina Monterosato, 1884
  • Pyrunculus Pilsbry, 1895
  • Retusa T. Brown, 1827
  • Volvulella Newton, 1891
  • Rhizorus Mountfort, 1810

[edit] References