| Circulus | |
|---|---|
 | |
| Shell of Circulus ryalli (paratype at MNHN, Paris) | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Superfamily: | Truncatelloidea |
| Family: | Vitrinellidae |
| Genus: | Circulus Jeffreys, 1865 |
| Type species | |
| Delphinula duminyi Requien, 1848 | |
| Synonyms [1] | |
| |
Circulus is a genus of very small and minute sea snails with an operculum, marine gastropod mollusks in the family Vitrinellidae. [2]
According to the World Register of Marine Species (WoRMS), the following species with valid names are included within the genus Circulus [3]
The Indo-Pacific Molluscan Database also mentions the following species with names in current use : [1]
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
Eulimidae is a family of very small parasitic sea snails, marine gastropod mollusks in the superfamily Vanikoroidea.
Chrysallida is a speciose genus of minute sea snails, pyramidellid gastropod mollusks or micromollusks in the family Pyramidellidae within the tribe Chrysallidini.
Mangelia is a large genus of sea snails, marine gastropod mollusks in the family Mangeliidae.
Alvania is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Rissoidae.
Rissoa 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 molluscs or micromolluscs, in the family Rissoinidae.
Zebina is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Zebinidae.
Cerithiopsis is a genus of very small sea snails, marine gastropod mollusks or micromollusks in the family Cerithiopsidae.
Eulimella is a genus of sea snails, marine gastropod mollusks in the family Pyramidellidae, the pyrams and their allies.
Pyrgiscus is a genus of sea snails, marine gastropod mollusks in the subfamily Turbonillinae of the family Pyramidellidae, the pyrams and their allies.
Syrnola is a genus of sea snails, marine gastropod molluscs in the subfamily Turbonillinae of the family Pyramidellidae, the pyrams and their allies.
Turbonilla is a large genus of ectoparasitic sea snails, marine gastropod molluscs in the family Pyramidellidae, the pyrams and their allies.
Pyrgulina is a small genus of very small sea snails, pyramidellid gastropod mollusks or micromollusks. This genus is currently placed in the subfamily Chrysallidinae of the family Odostomiidae.
Triphora is a genus of very small sea snails, marine gastropod molluscs in the subfamily Triphorinae of the family Triphoridae.
Vitrinella is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Vitrinellidae.
Cyclostremiscus is a genus of small sea snails in the family Tornidae.
