Pleurotomariidae, common name the "slit snails", is a family of large marine gastropods in the superfamily Pleurotomarioidea of the subclass Vetigastropoda. This family is a very ancient lineage; there were numerous species in the geological past. The genus includes several hundred fossil forms, mostly Paleozoic. It is one of the oldest gastropod families, commencing in the Cambrian.
Perotrochus is a genus of large sea snails with gills and an operculum, marine gastropod mollusks in the family Pleurotomariidae, the slit snails,.
Perotrochus amabilis, common name the lovely slit shell, is a species of sea snail, a marine gastropod mollusk in the family Pleurotomariidae.
Bayerotrochus boucheti is a species of sea snail, a marine gastropod mollusc in the family Pleurotomariidae.
Perotrochus tosatoi is a species of sea snail, a marine gastropod mollusk in the family Pleurotomariidae.
Mikadotrochus is a genus of sea snails, marine gastropod mollusks in the family Pleurotomariidae, the slit snails.
Bayerotrochus diluculum, common name the dawn slit shell, is a species of large sea snail, a marine gastropod mollusk in the family Pleurotomariidae, the slit snails.
Bayerotrochus indicus is a species of large sea snail, a marine gastropod mollusk in the family Pleurotomariidae, the slit snails.
Bayerotrochus pyramus, common name the pyramus slit shell, is a species of large sea snail, a marine gastropod mollusk in the family Pleurotomariidae, the slit snails.
Perotrochus caledonicus is a species of large sea snail, a marine gastropod mollusk in the family Pleurotomariidae, the slit snails.
Mikadotrochus gotoi is a species of large sea snail, a marine gastropod mollusk in the family Pleurotomariidae, the slit snails.
Perotrochus anseeuwi is a species of large sea snail, a marine gastropod mollusk in the family Pleurotomariidae, the slit snails.
Bayerotrochus charlestonensis is a species of large sea snail, a marine gastropod mollusk in the family Pleurotomariidae, the slit snails.
Perotrochus lucaya, common name the Lucayan slit shell, is a species of large sea snail, a marine gastropod mollusk in the family Pleurotomariidae, the slit snails.
Perotrochus maureri is a species of large sea snail, a marine gastropod mollusk in the family Pleurotomariidae, the slit snails.
Perotrochus metivieri is a species of large sea snail, a marine gastropod mollusk in the family Pleurotomariidae, the slit snails.
Perotrochus oishii is a species of large sea snail, a marine gastropod mollusk in the family Pleurotomariidae, the slit snails.
Perotrochus quoyanus is a species of large sea snail, a marine gastropod mollusk in the family Pleurotomariidae, the slit snails.
Perotrochus vicdani is a species of large sea snail, a marine gastropod mollusk in the family Pleurotomariidae, the slit snails.
Alisimitra deforgesi is a species of sea snail, a marine gastropod mollusk, in the family Costellariidae, the ribbed miters.
