| Plesiothyreus | |
|---|---|
 | |
| Shell of Plesiothyreus cossmanni (lectotype at MNHN, Paris) | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Neritimorpha |
| Order: | Cycloneritida |
| Family: | Phenacolepadidae |
| Genus: | Plesiothyreus Cossmann, 1888 [1] |
| Type species | |
| † Capulus parmophoroidesCossmann, 1885 | |
| Synonyms | |
| |
Plesiothyreus is a genus of very small sea snails or limpets, marine gastropod mollusks in the subfamily Phenacolepadinae of the family Phenacolepadidae. [2]
Species within the genus Plesiothyreus include:
Marginella is a very large genus of small tropical and temperate sea snails, marine gastropod molluscs in the subfamily Marginellinae of the family Marginellidae, the margin snails. It is the type genus of the family.
Terebra is a genus of small to large-sized predatory sea snails, marine gastropod molluscs in the family Terebridae, the auger snails.
Siphonaria is a genus of air-breathing sea snails or false limpets, marine pulmonate gastropod molluscs in the family Siphonariidae, the false limpets.
Umbraculum, common name the "umbrella slugs" is a genus of unusual sea snails or false limpets, marine gastropod molluscs in the family Umbraculidae.
Epitonium is a genus of small predatory sea snails, marine gastropod mollusks. Epitonium is the type genus of the family Epitoniidae, the wentletraps.
Emarginula is a genus of small keyhole limpets, marine gastropod molluscs in the family Fissurellidae.
Acmaea is a genus of sea snails, specifically true limpets, marine gastropod mollusks in the family Acmaeidae, one of the families of true limpets.
Cerithiidae, common name the cerithiids or ceriths, is a large family of medium-sized marine gastropods in the clade Sorbeoconcha.
The Columbellidae, the dove snails or dove shells, are a family of minute to small sea snails, marine gastropod mollusks in the order Neogastropoda.
Cancellariidae, common name the nutmeg snails or nutmeg shells, are a family of small to medium-large sea snails, marine gastropod mollusks in the clade Neogastropoda. Some of the shells of the species in this family resemble a nutmeg seed.
Homalopoma, common name the dwarf turbans, is a genus of mostly very small sea snails with a calcareous operculum, marine gastropoda molluscs in the subfamily Colloniinae of the family Colloniidae.
Phenacolepadidae is a family of small sea snails or false limpets, marine gastropod mollusks in the clade Cycloneritimorpha.
Diodora is a genus of small to medium-sized keyhole limpet in the family Fissurellidae.
Drillia is a genus of small sea snails, marine gastropod mollusks in the family Drilliidae.
Daphnella is a genus of sea snails, marine gastropod mollusks in the family Raphitomidae.
Mangelia is a large genus of sea snails, marine gastropod mollusks in the family Mangeliidae.
Phenacolepas is a genus of small sea snails that have a limpet-like or patelliform shell. These are marine gastropod mollusks in the family Phenacolepadidae.
Capulus is a genus of small sea snails, marine gastropod mollusks in the family Capulidae, the cap snails.
Circulus is a genus of very small and minute sea snails with an operculum, marine gastropod mollusks in the family Vitrinellidae.
Zacalantica is a genus of very small sea snails or limpets, marine gastropod mollusks in the subfamily Phenacolepadinae of the family Phenacolepadidae.