Barleeia, or the barleysnails, is a genus of very small sea snails. They are marine gastropod micromollusks in the family Barleeiidae. These snails are usually only a couple of millimeters in length.
Exquisitiropa is a monotypic genus of small land snails in the family Charopidae. The sole species is Exquisitiropa agnewi, also known as silky snail or silky pinwheel snail. It is endemic to Tasmania.
Clanculus is a genus of sea snail, marine gastropod molluscs of the family Trochidae, the top shells.
Pinna is a genus of bivalve molluscs belonging to the family Pinnidae. The type species of the genus is Pinna rudis.
Chlamys is a genus of small scallops, marine bivalve molluscs in the family Pectinidae. The name is taken from the Ancient Greek, χλαμΰς or Chlamys, a cloak worn by soldiers.
Petricola is a genus of saltwater clams, marine bivalve molluscs in the subfamily Petricolinae of the family Veneridae, the Venus clams.
Ancula is a genus of sea slugs, specifically dorid nudibranchs, marine gastropod molluscs in the family Goniodorididae.
Philiopsis is a genus of often colorful, medium-sized sea slugs, marine opisthobranch gastropod mollusks. These are not nudibranchs; instead they are headshield slugs, in the clade Cephalaspidea.
Cryptella is a genus of small-shelled slugs in the family Parmacellidae. They are endemic to the Canary Islands.
Amphissa is a genus of small sea snails, marine gastropod mollusks in the family Columbellidae, the dove snails.
Coronium is a genus of sea snails in the family Muricidae, the murex snails or rock snails.
Clelandella is a genus of sea snails, marine gastropod mollusks in the family Trochidae, the top snails.
Capulus is a genus of small sea snails, marine gastropod mollusks in the family Capulidae, the cap snails.
Obtusella is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Rissoidae.
Antillipecten is a monotypic genus of bivalves in the family Pectinidae. The only species is Antillipecten antillarum, also known as the Antillean scallop. It can be found in Caribbean waters, ranging from southern Florida to the West Indies and Bermuda.
Rissopsetia is a genus of sea snails, marine gastropod molluscs in the family Pyramidellidae.
Pholas is a taxonomic genus of marine bivalve molluscs in the subfamily Pholadinae of the family Pholadidae.
Astarte is a genus of bivalve mollusc in the Astartidae family. It was circumscribed by James Sowerby in 1816. As of 2017, WoRMS recognizes approximately 33 species in this genus.
After excluding groups not related, the informal group Sigmurethra has become the suborder Helicina, with the following infraorders and a collection of families with no superfamily:
Scaeochlamys is a genus of marine bivalves belonging to subfamily Pedinae of the family Pectinidae.
