Rissooidea, originally named Rissoacea by Gray, 1847, is a

taxonomic Taxonomy is the practice and science of categorization or classification. A taxonomy (or taxonomical classification) is a scheme of classification, especially a hierarchical classification, in which things are organized into groups or types. A ...

superfamily of small and minute marine

snail A snail is, in loose terms, a shelled gastropod. The name is most often applied to land snails, terrestrial pulmonate gastropod molluscs. However, the common name ''snail'' is also used for most of the members of the molluscan class Gastrop ...

s, belonging to the clade

Littorinimorpha Littorinimorpha is a large order of snails, gastropods, consisting primarily of sea snails ( marine species), but also including some freshwater snails ( aquatic species) and land snails (terrestrial species).Bouchet P. & Rocroi J.-P. (Ed.); Fr� ...

.Gofas, S. (2013). Rissooidea. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=14767 on 2013-06-04 With their phylogenetic analysis of rissooidean and cingulopsoidean families, Criscione F. & Ponder W.F. (2013) have created the superfamily

Truncatelloidea Truncatelloidea is a superfamily of snails, gastropod mollusks in the clade Caenogastropoda.Bouchet, P. (2013). ''Truncatelloidea''. Retrieved through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=7 ...

containing many families previously included in the superfamily Rissooidea. They have shown that Rissooidea was not

monophyletic In cladistics for a group of organisms, monophyly is the condition of being a clade—that is, a group of taxa composed only of a common ancestor (or more precisely an ancestral population) and all of its lineal descendants. Monophyletic gro ...

, encompassing two major clades, i.e. Risooidea s.s. and Truncatelloidea. The freshwater, brackish water, and semi-terrestrial families and

genera Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nomencl ...

were brought under Truncatelloidea.

Families

Families within the superfamily Rissooidea include: * Barleeiidae Gray, 1857 * Emblandidae Ponder, 1985 * Helicostoidae Pruvot-Fol, 1937 * Lironobidae Ponder, 1967 * † Mesocochliopidae Yu, 1987 * † Palaeorissoinidae Gründel & Kowalke, 2002 *

Rissoidae Rissoidae is a large family of very small and minute sea snails with an operculum, marine gastropod mollusks in the superfamily Rissooidea and the order Littorinimorpha. Distribution and habitat This family of snails is found worldwide. They l ...

Gray, 1847 *

Rissoinidae Rissoinidae is a large family of very small and minute sea snails with an operculum, marine gastropod mollusks, in the clade Littorinimorpha. Several genera that were previously part of Rissoinidae have been assigned to the Zebinidae family.Cri ...

Stimpson, 1865 *

Zebinidae Zebinidae is a family of small sea snails in the clade Littorinimorpha Littorinimorpha is a large order of snails, gastropods, consisting primarily of sea snails ( marine species), but also including some freshwater snails ( aquatic species) ...

Coan, 1964 ;Genera unassigned to a family: * † '' Avardaria'' Ali-Zade, 1932 * † '' Choerina'' Brusina, 1882 * † '' Fossarulus'' Neumayr, 1869 * † '' Schuettemmericia'' Schlickum, 1961 * † '' Staadtiellopsis'' Schlickum, 1968 * † '' Zilchiola'' Kadolsky, 1993 ; Family names brought into synonymy: * Anabathronidae Coan, 1964: synonym of Anabathridae Keen, 1971 * Ansolidae Slavoshevskaya, 1975: synonym of Barleeiidae Gray, 1857 * Barleeidae Gray, 1857: synonym of Barleeiidae Gray, 1857 * ''Coxielladda'' Iredale and Whiteley, 1938: belongs to the family

Pomatiopsidae Pomatiopsidae is a family of small, mainly freshwater snails, (some also occur in other habitats) that have gills and an operculum, aquatic gastropod mollusks in the superfamily Truncatelloidea (according to the taxonomy of the Gastropoda by ...

* † ''Ctyrokya'' Schlickum, 1965 : belongs to the family

Hydrobiidae Hydrobiidae, commonly known as mud snails, is a large cosmopolitan family of very small freshwater and brackish water snails with an operculum; they are in the order Littorinimorpha. Distribution Hydrobiidae are found in much of the world, ...

* ''Gabbia'' Tryon, 1865: synonym of ''Bithynia (Gabbia)'' Tryon, 1865, alternate representation of ''

Bithynia Bithynia (; Koine Greek: , ''Bithynía'') was an ancient region, kingdom and Roman province in the northwest of Asia Minor (present-day Turkey), adjoining the Sea of Marmara, the Bosporus, and the Black Sea. It bordered Mysia to the southwest, ...

'' Leach, 1818 * ''Rissoidea'': misspelling of Rissooidea

Nomenclature

This superfamily was previously known as Rissoacea. Prior to the recent ruling by the

ICZN The International Code of Zoological Nomenclature (ICZN) is a widely accepted convention in zoology that rules the formal scientific naming of organisms treated as animals. It is also informally known as the ICZN Code, for its publisher, the I ...

, many invertebrate superfamily names ended in the suffix -acea, or -aceae, not -oidea as now required according to ICZN article 29.2. The suffix -oidea used to be used for some subclasses and superorders, where it is still found. In much of the older literature including Keen 1958, Moore et al. 1952, and the Treatise on Invertebrate Paleontology, gastropod superfamilies are written with the suffix -acea.

Treatise on Invertebrate Paleontology The ''Treatise on Invertebrate Paleontology'' (or ''TIP'') published by the Geological Society of America and the University of Kansas Press, is a definitive multi-authored work of some 50 volumes, written by more than 300 paleontologists, and co ...

; part K (Nautiloidea) 1964 and part L (Ammonoidea) 1962; Geological Society of America and Univ. of Kansas Press.

References

Littorinimorpha {{Caenogastropoda-stub