Turbinidae | |
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Three views of a shell of Turbo sazae with the operculum in place | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
Subclass: | Vetigastropoda |
Order: | Trochida |
Superfamily: | Trochoidea |
Family: | Turbinidae Rafinesque, 1815 |
Genera and species | |
See text |
Turbinidae, the turban snails, are a family of small to large marine gastropod molluscs in the superfamily Trochoidea. [1]
Turbinidae have a strong, thick calcareous operculum readily distinguishing them from the somewhat similar Trochidae or top snails, which have a corneous operculum. This strong operculum serves as a passive defensive structure against predators that try to enter by way of the aperture or that would break the shell at the outer lip. These operculum are rounded ovals that are flat with a swirl design on one side and domed on the other. They are known as Pacific cat's eye or Shiva eye shells or mermaid money, and are used for decorative purposes.
The common name turban snail presumably refers to the shell's similarity in appearance to a turban. However, the scientific name Turbinidae is based on the genus name Turbo , which is Latin for spinning top , a child's toy. The word turbine has a similar derivation.
Previously[ when? ] they were classified in the subclass Prosobranchia, in the order Archaeogastropoda in the superfamily Trochacea. Trochaecea is now a synonym for the superfamily Trochoidea. However, this is a quite ancient group of gastropods, probably originating in the Permian period 298 to 250 million years ago. [2] They have typical primitive characters like the nacreous interior of the shell.
Turbinidae belongs to superfamily Turbinoidea according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).
This family consists of eight following subfamilies (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005):
Turbinidae was redefined and moved to the redefined superfamily Trochoidea according to Williams et al. (2008): [4] Angariidae was elevated to family level, Colloniinae was elevated to family Colloniidae within Phasianelloidea, [4] Margaritinae was moved to Turbinidae from Trochidae. [4]
This family consists of five following subfamilies according to Williams et al. (2008): [4]
The following subfamilies (sensu Bouchet & Rocroi (2005) classification of subfamilies in Turbinidae) were kept in Turbinidae:
Turbinids occur in shallow and deep waters. The family has a large distribution, from the tropics to the polar regions, but most of the species live in tropical and subtropical shallow waters.
Genera in the family Turbinidae include:
The Buccinidae are a very large and diverse taxonomic family of large sea snails, often known as whelks or true whelks.
Calliostomatidae is a family of sea snails within the superfamily Trochoidea and the clade Vetigastropoda.
Fissurellidae, common name the keyhole limpets and slit limpets, is a taxonomic family of limpet-like sea snails, marine gastropod molluscs in the clade Vetigastropoda. Their common name derives from the small hole in the apex of their cone-like shells. Although superficially resembling "true" limpets, they are in fact not closely related to them.
The Nassariidae, Nassa mud snails (USA), or dog whelks (UK), are a taxonomic family of small to medium-sized sea snails, marine gastropod mollusks in the clade Neogastropoda.
Trochoidea is a superfamily of small to very large vetigastropod sea snails with gills and an operculum. Species within this superfamily have nacre as the inner shell layer. The families within this superfamily include the Trochidae, the top snails. This superfamily is the largest vetigastropodan superfamily, containing more than 2,000 species.
Liotiidae is a family of small sea snails, marine gastropod mollusks in the clade Vetigastropoda.
Lithopoma is a genus of medium-sized to large sea snails with a calcareous operculum, marine gastropod mollusks in the subfamily Turbininae of the family Turbinidae, the turban snails.
Astralium, common name star snails, is a genus of sea snails, marine gastropod mollusks in the family Turbinidae, the turban snails and star snails.
Bolma is a genus of medium to large sea snails with a calcareous operculum, marine gastropod molluscs in the family Turbinidae, the turban snails.
Colloniidae is a family of small sea snails with calcareous opercula, marine gastropod mollusks in the clade Vetigastropoda.
Bolma modesta, common name the modest bolma, is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails.
Bellastraea is a genus of sea snails, marine gastropod mollusks in the family Turbinidae, the turban snails.
Guildfordia is a genus of sea snails, marine gastropod mollusks in the family Turbinidae, the turban snails.
The Cantharidinae are a taxonomic subfamily of very small to large sea snails, marine gastropod molluscs in the family Trochidae, common name top snails.
Uvanilla is a genus of sea snails, marine gastropod mollusks in the family Turbinidae, the turban snails.
Bolma henica, common name the deep sea star shell, is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails.
Bolma midwayensis is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails.
Bolma millegranosa is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails.
Bolma tayloriana, common name Taylor's star shell, is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails.
Bolma venusta is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails.