Hypsogastropoda is a clade containing marine gastropods within the clade Caenogastropoda.
Comitas is a genus of medium-sized sea snails, marine gastropod molluscs in the family Pseudomelatomidae.
Microvoluta is a genus of very small sea snails, marine gastropod molluscs in the family Volutomitridae.
The Cerithioidea is a superfamily of marine, brackish water and freshwater gastropod containing more than 200 genera. The Cerithoidea are included unassigned in the subclass Caenogastropoda. The original name of this superfamily was Cerithiacea, in keeping with common superfamily endings at the time.
The Cimidae is a taxonomic family of sea snails, marine gastropod mollusks in the infraclass Lower Heterobranchia.
Mauidrillia is a genus of sea snails, marine gastropod mollusks in the family Horaiclavidae, the turrids.
Coelotrochus polychromus is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Laevistrombus is a genus of sea snails, marine gastropod mollusks in the family Strombidae, the true conchs.
Pyrgiscus is a genus of sea snails, marine gastropod mollusks in the subfamily Turbonillinae of the family Pyramidellidae, the pyrams and their allies.
Polyschides is a genus of gadilid tusk shell (scaphopod).
Micrelenchus tessellatus is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Elaphriella meridiana is a species of sea snail, a marine gastropod mollusk in the family Solariellidae.
Marshallena neozelanica is a species of sea snail, a marine gastropod mollusk in the family Marshallenidae.
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:
Spectamen venustum is an extinct species of sea snail, a marine gastropod mollusk, in the family Solariellidae.
Striatostrombus is an extinct genus of fossil sea snails, marine gastropod mollusks in the family Strombidae, the true conchs.
Puha fulgida is an extinct species of sea snail, a marine gastropod mollusk in the family Raphitomidae.
Altivasum is a genus of sea snails, marine gastropod mollusks in the family Turbinellidae.
Euthrenopsis otagoensis is a species of marine gastropod mollusc in the family Buccinidae. It was first described by Baden Powell in 1929. It is endemic to the waters of New Zealand. It is the type species for the genus Euthrenopsis.
Parasyrinx is a genus of extinct sea snails, marine gastropod mollusks unassigned in the superfamily Conoidea.
