Crassispira is a genus of small predatory sea snails with narrow, high-spired shells, marine gastropod mollusks in the family Pseudomelatomidae.
Bittium is a genus of very small sea snails, marine gastropod molluscs in the family Cerithiidae, the horn snails.
Imaclava is a genus of sea snails, marine gastropod mollusks in the family Drilliidae.
Pilsbryspira is a genus of small predatory sea snails, marine gastropod mollusks in the family Pseudomelatomidae.
Compsodrillia is a genus of sea snails, marine gastropod mollusks in the family Pseudomelatomidae, the turrids and allies.
Polystira is a genus of sea snails, marine gastropod mollusks in the family Turridae, the turrids.
Lioglyphostoma is a genus of sea snails, marine gastropod mollusks in the family Pseudomelatomidae.
Miraclathurella is a genus of sea snails, marine gastropod mollusks in the family Pseudomelatomidae.
Knefastia is a genus of sea snails, marine gastropod mollusks in the family Pseudomelatomidae.
Curtitoma is a genus of sea snails, marine gastropod mollusks in the family Mangeliidae.
Oenopota is a genus of sea snails, marine gastropod mollusks in the family Mangeliidae.
Melanella is a genus of very small ectoparasitic sea snails, marine gastropod mollusks or micromollusks in the family Eulimidae.
Eulima is a genus of small, ectoparasitic sea snails, marine gastropod mollusks in the family Eulimidae.
Cerithiopsis is a genus of very small sea snails, marine gastropod mollusks or micromollusks in the family Cerithiopsidae.
Niso is a genus of very small parasitic sea snails, marine gastropod mollusks or micromollusks in the family Eulimidae.
Egilina is a genus of sea snails, marine gastropod mollusks in the family Pyramidellidae, the pyrams and their allies.
Ividella is a genus of sea snails, marine gastropod mollusks in the family Pyramidellidae, the pyrams and their allies.
Gastrochaena is a genus of saltwater clams, marine bivalve molluscs in the family Gastrochaenidae. The type species of this genus is Gastrochaena cuneiformis.
Triphora is a genus of very small sea snails, marine gastropod molluscs in the family Triphoridae. The genus was named by Blainville in 1828, and the type species is Triphora gemmata Blainville, 1828. Like most of the other genera in this family, the shells of species in this genus are extremely high-spired with sculptural decoration, and are sinistral (left-handed) in coiling.
Vitrinella is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Vitrinellidae.
