Stromboidea

Strombidae, commonly known as the true conchs, is a taxonomic family of medium-sized to very large sea snails in the superfamily Stromboidea, and the Epifamily Neostromboidae. The term true conchs, being a common name, does not have an exact meaning. It may generally refer to any of the Strombidae but sometimes is used more specifically to include only Strombus and Lambis. The family currently includes 31 extant, and 10 extinct genera.

Aporrhaidae is a family of sea snails commonly called the "pelican's foot snails." The taxonomy of the Gastropoda by Bouchet & Rocroi, 2005 categorizes Aporrhaidae as marine gastropod mollusks in the clade Littorinimorpha.

Rostellariidae is a family of sea snails, marine gastropod molluscs in the clade Littorinimorpha.

Struthiolariidae is a family of small to medium-sized sea snails, marine gastropod molluscs in the superfamily Stromboidea.

The Stromboidea, originally named the Strombacea by Rafinesque in 1815, is a superfamily of medium-sized to very large sea snails in the order Littorinimorpha.

Seraphsidae is a family of small to medium-sized sea snails, marine gastropod molluscs in the superfamily Stromboidea. Only one genus, Terebellum, is alive today, but several fossil genera are known, with the earliest records of the family dating back to the Danian age of the Paleocene. Seraphsids are adapted for a burrowing life, with a streamlined shell. Terebellum and its fossil relatives were originally classified as members of the closely related family Strombidae. When they were recognized as a separate family, the family was initially called Terebellidae, but as the name was already in