Littorinoidea are a superfamily of both

sea snail Sea snails are slow-moving marine (ocean), marine gastropod Mollusca, molluscs, usually with visible external shells, such as whelk or abalone. They share the Taxonomic classification, taxonomic class Gastropoda with slugs, which are distinguishe ...

s and

land snail A land snail is any of the numerous species of snail that live on land, as opposed to the sea snails and freshwater snails. ''Land snail'' is the common name for terrestrial molluscs, terrestrial gastropod mollusks that have gastropod shell, shel ...

s which have a

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and an operculum, terrestrial and marine

gastropod Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, freshwater, and fro ...

mollusk Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The ...

s in the

clade In biology, a clade (), also known as a Monophyly, monophyletic group or natural group, is a group of organisms that is composed of a common ancestor and all of its descendants. Clades are the fundamental unit of cladistics, a modern approach t ...

Littorinimorpha. The terrestrial family within this group, the Pomatiidae, are sometimes called "land winkles" because the group originated in the sea and the closely related family Littorinidae are known as "winkles".

Taxonomy

These families and subfamilies have been recognized in the taxonomy of Bouchet & Rocroi (2005): * Littorinidae

Children A child () is a human being between the stages of childbirth, birth and puberty, or between the Development of the human body, developmental period of infancy and puberty. The term may also refer to an unborn human being. In English-speaking ...

, 1834 - the periwinkles **Subfamily Littorininae

, 1834 **Subfamily Lacuninae Gray, 1857 **Subfamily Laevilitorininae Reid, 1989 * † Bohaispiridae Youluo, 1978 * Pickworthiidae Iredale, 1917 ** Subfamily Pickworthiinae Iredale, 1917 (synonym: Reynellonidae Iredale, 1917) ** Subfamily Pelycidiinae Ponder & Hall, 1983 ** Subfamily Sherborniinae Iredale, 1917 * Pomatiidae Newton, 1891 (1828) ** Subfamily Pomatiinae Newton, 1891 *

Annulariidae The family Annulariidae is a Taxonomy (biology), taxonomic family of small Operculum (gastropod), operculate land snails in the superfamily Littorinoidea.MolluscaBase eds. (2020). MolluscaBase. Annulariidae Henderson & Bartsch, 1920. Accessed thr ...

Henderson & Bartsch, 1920 ** Subfamily Annulariinae Henderson & Bartsch, 1920 **Subfamily Rhytidopomatinae Henderson & Bartsch, 1920 **Subfamily Tudorinae Watters, 2006 * † Purpurinidae Zittel, 1895 * Skeneopsidae Iredale, 1915 * † Tripartellidae Gründel, 2001 * Zerotulidae Warén & Hain, 1996 (Extinct taxa are indicated by a

dagger A dagger is a fighting knife with a very sharp point and usually one or two sharp edges, typically designed or capable of being used as a cutting or stabbing, thrusting weapon.State v. Martin, 633 S.W.2d 80 (Mo. 1982): This is the dictionary or ...

, †.) ;Families brought into synonymy: * Bembiciidae: synonym of Lacuninae * Cyclostomatidae: synonym of Pomatiidae * Ericiidae: synonym of Pomatiidae * Faxiidae: synonym of Sherborniinae * Lacunidae: synonym of Littorinidae * Melarhaphidae: synonym of Littorininae * Reynellonidae: synonym of Pickworthiinae * Risellidae: synonym of Lacuninae

References

{{Taxonbar, from=Q6653350 Littorinimorpha Gastropod superfamilies Taxa named by John George Children