Rostanga is a genus of sea slugs in the family Discodorididae. Some sources, such as The Sea Slug Forum still classify Rostanga in the family Dorididae.
Neomphaloidea is a superfamily of deep-sea snails or limpets, marine gastropod mollusks. Neomphaloidea is the only superfamily in the order Neomphalida.
Calliostoma is a genus of small to medium-sized sea snails with gills and an operculum, marine gastropod molluscs within the family Calliostomatidae, the Calliostoma top snails. Previously this genus was placed within the family Trochidae. Calliostoma is the type genus of the family Calliostomatidae.
Calliostomatidae is a family of sea snails within the superfamily Trochoidea and the clade Vetigastropoda.
Sigapatella is a genus of small to medium-sized sea snails, marine gastropod molluscs in the family Calyptraeidae, the slipper snails, Chinese hat snails, and cup-and-saucer snails.
Homalopoma, common name the dwarf turbans, is a genus of mostly very small sea snails with a calcareous operculum, marine gastropoda molluscs in the subfamily Colloniinae of the family Colloniidae.
Penion is a genus of large marine snails, commonly known as siphon whelks, classified within the mollusc family Austrosiphonidae, the true whelks.
Pseudococculinidae is a family of small sea snails or false limpets, marine gastropod mollusks in the superfamily Lepetelloidea.
Melanodrymiidae is a family of gastropods belonging to the superfamily Neomphaloidea. This family has no subfamilies.
Odostomia is the most speciose genus of minute sea snails, pyramidellid gastropod mollusks. This genus is placed in the family Pyramidellidae in the subfamily Odostomiinae. There are several hundred species in this diverse genus
Pomatiopsidae is a family of small, mainly freshwater snails, that have gills and an operculum, aquatic gastropod mollusks in the superfamily Truncatelloidea.
Angaria delphinus, common name the common delphinula, is a species of sea snail, a marine gastropod mollusc of the family Angariidae.
Marshallena is a genus of sea snails, marine gastropod mollusks in the family Marshallenidae.
Leptogyra is a genus of sea snails, marine gastropod mollusks in the family Melanodrymiidae, belonging to the clade Neomphalina.
Leptogyra costellata is a species of sea snail, a marine gastropod mollusk in the family Melanodrymiidae.
Leptogyra verrilli is a species of sea snail, a marine gastropod mollusk in the family Melanodrymiidae.
Leptogyra inflata is a species of sea snail, a marine gastropod mollusk in the family Melanodrymiidae.
Hyalogyrina is a genus of sea snails, marine gastropod mollusks in the family Hyalogyrinidae.
Xylodiscula is a genus of sea snails, marine gastropod molluscs in the family Xylodisculidae.
Bathyxylophila is a genus of sea snails, marine gastropod mollusks in the family Larocheidae.
