Crassispira is a genus of small predatory sea snails with narrow, high-spired shells, marine gastropod mollusks in the family Pseudomelatomidae. They first appeared in the fossil record approximately 48.6 million years ago during the Eocene epoch, and still exist in the present day.
Teinostoma is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Teinostomatidae.
Tornidae is a family of very small and minute sea snails with an operculum, marine gastropod mollusks in the clade Littorinimorpha. This family used to be known as the Vitrinellidae. Iredale has shown that the family Adeorbidae Monterosato, 1884 should be called Tornidae
Raphitoma is a genus of sea snails, marine gastropod mollusks in the family Raphitomidae.
Miltromorpha is a genus of sea snails, marine gastropod mollusks in the family Mitromorphidae, in the superfamily Conoidea the cone snails and their allies. This genus was originally described by Carpenter off the west coast of the United States. The species occur mainly on the continental shelf and in insular environments. Their real diversity is poorly understood.
Alvania is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Rissoidae.
Rissoina is a large genus of minute sea snails, marine gastropod mollusks or micromollusks, in the family Rissoinidae.
Setia is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Rissoidae.
Zebina is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Zebinidae.
Circulus is a genus of very small and minute sea snails with an operculum, marine gastropod mollusks in the family Vitrinellidae.
Dizoniopsis is a genus of minute sea snails, marine gastropod molluscs in the family Cerithiopsidae.
Macromphalina is a genus of very small sea snails, marine gastropod mollusks in the family Vanikoridae.
Lophocochlias is a genus of minute sea snails or micromolluscs, marine gastropod molluscs in the family Tornidae.
Discopsis is a genus of small sea snails, marine gastropod mollusks in the family Tornidae.
Cochliolepis is a genus of small sea snails, marine gastropod mollusks in the family Tornidae.
Vitrinella is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Vitrinellidae.
Asthenotoma is a genus of sea snails, marine gastropod mollusks in the family Borsoniidae.
Cyclostremiscus is a genus of small sea snails in the family Tornidae.
Orbitestella is a genus of sea snails, marine gastropod mollusks in the family Orbitestellidae.
Solariorbis is a genus of gastropods belonging to the family Tornidae.
