| Omalogyroidea | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Heterobranchia |
| Infraclass: | Lower Heterobranchia |
| Superfamily: | Omalogyroidea G.O. Sars, 1878 |
| Families | |
See text | |
Omalogyroidea is a superfamily of minute sea snails, marine gastropod mollusks or micromollusks in the informal group Lower Heterobranchia. [1] [2]
There are two families within the superfamily Omalogyroidea; one of them is composed entirely of extinct species:
Neogastropoda is a clade of sea snails, both freshwater and marine gastropod molluscs.
Volutoidea is a taxonomic superfamily of predatory sea snails, marine gastropod mollusks in the clade Neogastropoda.
Neritoidea is a taxonomic superfamily of mostly sea snails, nerites and their allies, marine gastropod mollusks in the order Cycloneritida.
Onchidoridoidea is a taxonomic superfamily of sea slugs, dorid nudibranchs, marine gastropod molluscs.
The Systellommatophora is a clade of primitive, air-breathing slugs, according to the taxonomy of the Gastropoda.
Polyceroidea is a taxonomic superfamily of sea slugs, specifically dorid nudibranchs, marine gastropod mollusks in the clade Doridacea.
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.
Sigmurethra is a taxonomic category of air-breathing land snails and slugs, terrestrial pulmonate gastropod molluscs. This is an informal group which includes the majority of land snails and slugs.
Cycloneritida is a order of land snails, freshwater snails, and sea snails.
The Ptenoglossa is an informal taxonomic group of sea snails. This group was considered paraphyletic or polyphyletic by Ponder and Lindberg (1997) in their classification of gastropod molluscs.
The Euctenidiacea, common name dorid nudibranchs, are a taxonomic suborder of sea snails or slugs, marine gastropod molluscs in the order Nudibranchia. Bouchet & Rocroi (2005) rejected the name Anthobranchia on the grounds that it also included Onchidium at the time of original publication. Doridina is equivalent and used in the latest classification.
Seguenzioidea is a superfamily of minute to medium-sized sea snails, marine gastropod mollusks in the clade Vetigastropoda.
Vanikoroidea is a superfamily of sea snails, marine gastropod molluscs in the clade Littorinimorpha. The superfamily Eulimoidea is a synonym of Vanikoroidea.
Valvatoidea is a superfamily of minute freshwater and marine snails, aquatic gastropod mollusks in the informal group Lower Heterobranchia.
Olivoidea is a taxonomic superfamily of minute to medium-large predatory sea snails, marine gastropod mollusks in the clade Neogastropoda.
Areneidae is a family of sea snails, marine gastropod mollusks in the clade Vetigastropoda.
The Fossarininae are a taxonomic subfamily of very small to large sea snails, marine gastropod molluscs in the family Trochidae, common name top snails.
Urocoptoidea is a superfamily of land snails, gastropods in the suborder Helicina.
Fusiturridae is a family of small to medium-sized sea snails, marine gastropod mollusks in the superfamily Conoidea.
Cocculinida is an order of deepwater limpets, in the subclass Neomphaliones.
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