Trochoidea is a

superfamily SUPERFAMILY is a database and search platform of structural and functional annotation for all proteins and genomes. It classifies amino acid sequences into known structural domains, especially into SCOP superfamilies. Domains are functional, str ...

of small to very large vetigastropod

sea snail Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the ...

s with

gill A gill () is a respiratory organ that many aquatic organisms use to extract dissolved oxygen from water and to excrete carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow respiration on land provided they are ...

s and an operculum.Gofas, S. (2013). Trochoidea. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=156489 on 2013-06-29 Species within this superfamily have

nacre Nacre ( , ), also known as mother of pearl, is an organicinorganic composite material produced by some molluscs as an inner shell layer; it is also the material of which pearls are composed. It is strong, resilient, and iridescent. Nacre is f ...

as the inner shell layer. The families within this superfamily include the

Trochidae The Trochidae, common name top-snails or top-shells, are a family of various sized sea snails, marine gastropod molluscs in the subclass Vetigastropoda. This family is commonly known as the top-snails because in many species the shell resemb ...

, the top snails. This superfamily is the largest vetigastropodan superfamily, containing more than 2,000 species. This taxon is ''not'' the same as a pulmonate

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 gastropod mollusks that have shells (those without shells are known as ...

genus which is spelled the same way: ''Trochoidea'' (genus).

Taxonomy

2005 taxonomy

This superfamily consisted of nine following families (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005): *

Rafinesque, 1815 *

Calliostomatidae Calliostomatidae is a family of sea snails within the superfamily Trochoidea and the clade Vetigastropoda.Gofas, S. (2013). Calliostomatidae. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdeta ...

Thiele, 1924 (1847) * † Elasmonematidae Knight, 1956 * † Eucochlidae Bandel, 2002 * † Microdomatidae Wenz, 1938 * † Proconulidae Cox, 1960 * Solariellidae Powell, 1951 - synonym: Minoliinae Kuroda, Habe & Oyama, 1971 * † Tychobraheidae Horný, 1992 * †

Velainellidae Velainellidae is a very small Taxonomy (biology), taxonomic family of fossil sea snails, marine (ocean), marine gastropod mollusks in the superfamily Trochoidea (superfamily), Trochoidea, the top snails, turban snails and their allies. Genera Th ...

Vasseur, 1880

2017 taxonomy

Williams ''et al.'' (2008) have made further refinements to the taxonomy of Trochoidea. The revised taxonomy as defined by Bouchet et al. (2017) resulted in the following families. The fossil families, tentatively included in this list, are based on Tracey ''et al.'' (1993) Tracey S., J.A. Todd & D.H. Erwin, 1993, ''Mollusca: Gastropoda''. Pp. 131–167, in: M. J. Benton, ed., The Fossil Record, volume 2. chapman & hall, london. 845 pp. * Angariidae Gray, 1857 * † Anomphalidae Wenz, 1938 * † Araeonematidae Nützel, 2012 * Areneidae McLean, 2012 *

Thiele, 1924 (1847) *

Colloniidae Colloniidae is a family of small sea snails with calcareous opercula, marine gastropod mollusks in the clade Vetigastropoda.MolluscaBase eds. (2020). MolluscaBase. Colloniidae Cossmann, 1917. Accessed through: World Register of Marine Specie ...

Cossmann, 1917 *

Conradiidae Conradiidae is a taxonomic family (created in 1987 by Golikov & Starobogatov) of very small sea snails, marine gastropod molluscs or micromolluscs. These genera were previously included in the polyphyletic family Skeneidae. They belong with ...

Golikov & Starobogatov, 1987 * † Elasmonematidae Knight, 1956 * † Epulotrochidae Gründel, Keupp & Lang, 2017 * † Eucochlidae Bandel, 2002 * Liotiidae Gray, 1850 *

Margaritidae Margaritidae is a family of small sea snails, marine gastropod mollusks in the superfamily Trochoidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).Bouchet, P. (2012). Margaritidae. Accessed through: World Register ...

Thiele, 1924 * † Metriomphalidae Gründel, Keupp & Lang, 2017 * † Microdomatidae Wenz, 1938 * † Nododelphinulidae Cox, 1960 * Phasianellidae Swainson, 1840 * † Proconulidae Cox, 1960 * † Sclarotrardidae Gründel, Keupp & Lang, 2017 * Skeneidae Clark W., 1851 * Solariellidae Powell, 1951 *

Tegulidae Tegulidae is a family of small to large sea snails, marine gastropod mollusks in the superfamily Trochoidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).Bouchet, P. (2013). Tegulidae Kuroda, Habe & Oyama, 1971. Access ...

Kuroda, Habe & Oyama, 1971 *

Rafinesque, 1815 *

Turbinidae Turbinidae, the turban snails, are a family of small to large marine gastropod molluscs in the superfamily Trochoidea.Bouchet, P. (2014). Turbinidae Rafinesque, 1815. Accessed through: World Register of Marine Species at http://www.marinespecies ...

Rafinesque, 1815 * † Tychobraheidae Horný, 1992 * †

Vasseur, 1880 Unassigned to a family: * '' Margarella'' Thiele, 1893 - '' Margarella rosea'' belongs to Cantharidinae, but '' Margarella antarctica'' belongs to

/ Thysanodontinae as '' Carinastele antarctica''.Williams S.T., Donald K.M., Spencer H.G. & Nakano T. (2010) Molecular systematics of the marine gastropod families Trochidae and Calliostomatidae (Mollusca: Superfamily Trochoidea). Molecular Phylogenetics and Evolution 54:783-809. ;Nomen dubium: * Ataphridae Cossmann, 1915 ;Families brought into synonymy: * Crosseolidae Hickman, 2013: synonym of

Golikov & Starobogatov, 1987 * Cyclostrematidae P. Fischer, 1865: synonym of Liotiidae Gray, 1850 * Delphinulidae Stoliczka, 1868: synonym of Angariidae Gray, 1857 * Gazidae Hickman & McLean, 1990: synonym of

Thiele, 1924 * Minoliinae Kuroda, Habe & Oyama, 1971: synonym of Solariellidae Powell, 1951 * † Parataphrinae Calzada, 1989: synonym of † Proconulidae Cox, 1960 * Stomatellidae Gray, 1840: synonym of Stomatellinae Gray, 1840 * Stomatiidae Carpenter, 1861: synonym of Stomatellinae Gray, 1840 * Tricoliidae Woodring, 1928: synonym of Tricoliinae Woodring, 1928 (rank change)

References

* Hickman C. S. & McLean J. H. (1990). Systematic revision and suprageneric classification of trochacean gastropods. Science Series of Natural History Museum of Los Angeles County 35: 1-169
Hickman C.S. (1992). Reproduction and development of Trochacean gastropods. The Veliger. 35(4): 245-272
*
Suzanne T. Williams (2012), ''Advances in molecular systematics of the vetigastropod superfamily Trochoidea''; Zoologica Scripta Volume 41, Issue 6, pages 571–595, November 2012
{{Taxonbar, from=Q42787221 Gastropod superfamilies Marine gastropods Taxa named by Constantine Samuel Rafinesque