Dentaliida is one of the two orders of scaphopod mollusks, commonly known as elephant's tusk shells. The order Dentaliida contains most of the larger scaphopods, and is distinguished from the other order by the shape of its shell, the shape of the foot, and the arrangement of some of their internal organs.
Idiosepiidae, also known as the pygmy squids, is a family of squids in the superorder Decapodiformes. They are the smallest known squids.
Tridacna mbalavuana, the tevoro clam, is a species of bivalve in the family Cardiidae. It is found in Fiji and Tonga. It is currently listed on the IUCN Red List of Threatened Species.
Dosina is a genus of marine bivalve molluscs, in the family Veneridae.
Pterygioteuthis is a genus of squid in the family Pyroteuthidae. Members are differentiated from the genus Pyroteuthis due to size and head shape. The genus is characterised by the presence of a lidded photophore over each eye.
Lanascalidae is an extinct family of sea snails, marine gastropod molluscs.
Speightiidae is an extinct taxonomic family of fossil sea snails, marine gastropod mollusks. This family is not assigned to a superfamily. It has been traditionally classified near the family Turridae. But in 1993 it was shown that many, if not all, species that were placed in this family should instead be placed in the family Fasciolariidae.
Bactrocythara agachada is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.
Amphidromus coeruleus is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Camaenidae.
Chama congregata, commonly known as the corrugated jewel box clam, is a species of bivalve mollusc in the family Chamidae. It can be found along the Atlantic coast of North America, ranging from North Carolina to the West Indies and Bermuda.
Occidenthella is a genus of sea slugs, specifically aeolid nudibranchs, in the family Flabellinidae. The only described species is Occidenthella athadona, a combination named in 2017. It was originally described as Coryphella athadona in 1875. The genus name Occidenthella, from occidens, meaning "west" in Latin, refers to its distribution in the Western Pacific Ocean.
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:
Babelomurex juliae is a species of sea snail, a marine gastropod mollusk, in the family Muricidae, the murex snails or rock snails. It occurs in the Atlantic Ocean.
Hemidonax is a genus of bivalve molluscs. It is the only genus in the family Hemidonacidae, which is the only family in the superfamily Hemidonacoidea in the order Venerida.
Rokopella brummeri is a species of monoplacophoran, a superficially limpet-like marine mollusc. It is found in the northern Atlantic Ocean.
Rokopella capulus is a species of monoplacophoran, a superficially limpet-like marine mollusc.
Rokopella goesi is a species of monoplacophoran, a superficially limpet-like marine mollusc.
Rokopella segonzaci is a species of monoplacophoran, a superficially limpet-like marine mollusc.
Amonovula is a monotypic genus of marine gastropod molluscs in the family Ovulidae, the ovulids, cowry allies or false cowries
Calliodentalium is a genus of scaphopodan molluscs. It is monotypic within the family Calliodentaliidae. It is known from the Atlantic, Indian, and Pacific Oceans.
