| 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.
Scissurella is a genus of minute sea snails, marine gastropod molluscs in the family Scissurellidae, the small slit snails.
Mitrella is a genus of small sea snails, marine gastropod mollusks in the family Columbellidae, the dove shells or dove snails.
Mangelia is a large genus of sea snails, marine gastropod mollusks in the family Mangeliidae.
Cyclostrema is a genus of sea snails, marine gastropod mollusks in the family Liotiidae.
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 mollusks or micromollusks, 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 mollusks 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.
Tornus is a genus of sea snails, marine gastropod mollusks in the family Tornidae.
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.
