Pyramidellidae, common name the pyram family, or pyramid shells, is a voluminous taxonomic family of mostly small and minute ectoparasitic sea snails, marine heterobranch gastropod molluscs. The great majority of species of pyrams are micromolluscs.
Turbonillinae is a subfamily of mostly minute parasitic sea snails, marine gastropod molluscs in the family Pyramidellidae, the pyrams and their allies.
Cingulinini is a taxonomic tribe of very small sea snails, marine gastropod mollusks in the family Pyramidellidae, the pyrams and their allies.
Marginellidae, or the margin shells, are a taxonomic family of small, often colorful, sea snails, marine gastropod molluscs in the clade Neogastropoda.
Chrysallida is a speciose genus of minute sea snails, pyramidellid gastropod mollusks or micromollusks in the family Pyramidellidae within the tribe Chrysallidini.
Bittium is a genus of very small sea snails, marine gastropod molluscs in the family Cerithiidae, the horn snails.
Angaria is a genus of sea snails, marine gastropod mollusks in the family Angariidae. Angaria is the only genus in the family Angariidae.
Alaginella is a genus of sea snails, marine gastropod mollusks in the family Marginellidae.
Rissoa is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Rissoidae.
Setia is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Rissoidae.
Eulimella is a genus of sea snails, marine gastropod mollusks in the family Pyramidellidae, the pyrams and their allies.
Spirotropis is a genus of sea snails, marine gastropod mollusks in the family Drilliidae.
Miralda is a genus of sea snails, marine gastropod mollusks in the family Pyramidellidae, the pyrams, and their allies.
Odostomella is a genus of sea snails, marine gastropod mollusks in the family Pyramidellidae, the pyrams and their allies.
Koloonella is a genus of sea snails, marine gastropod mollusks in the family Murchisonellidae, the pyrams and their allies.
Koloonella coacta, common name the forced pyramid-shell, is a species of sea snail, a marine gastropod mollusk in the family Murchisonellidae, the pyrams and their allies.
Retusa is a genus of very small head-shield sea snails or barrel-bubble snails, marine gastropod mollusks in the family Retusidae.
Aclis is a genus of small sea snails, marine gastropod mollusks in the family Eulimidae.
Cylindriscala is a genus of predatory sea snails, marine prosobranch gastropod mollusks in the family Epitoniidae, commonly known as wentletraps.
Epigrus is a genus of gastropods belonging to the family Epigridae.
