Strombidae

Strombidae

Taxobox
name = Strombidae


regnum = Animalia
phylum = Mollusca
classis = Gastropoda
subclassis = Orthogastropoda
superordo = Caenogastropoda
ordo = Sorbeoconcha
subordo = Hypsogastropoda
infraordo = Littorinimorpha
superfamilia = Stromboidea
familia = Strombidae
familia_authority = Rafinesque, 1815
subdivision_ranks = Genera
subdivision = See text.

Strombidae, common name the true conchs, is a taxonomic family of medium-sized to very large sea snails with an operculum. These are marine gastropod mollusks in the order Sorbeoconcha.

The family Strombidae includes the true conchs, tibias, and their allies. Many more species existed in the geological past than are now extant.

Distribution

Most of the living species of strombids occur in the Indo-Pacific region.

Six species of strombids are found in the wider Caribbean region, and all of them are in the genus "Strombus".

Description and life habits

Strombids have long eye stalks, a long and narrow aperture, and a siphonal canal. The shell margin has an indentation near the anterior end which accommodates one of the eye stalks. This indentation is called a strombid or stromboid notch.

Unlike most snails, which glide slowly across the substrate on their foot, strombids have a characteristic leaping motion, using their pointed, sickle-shaped, horny operculum to propel themselves forward in a leaping motion (Parker 1922).

The species in this family grow a flared lip upon reaching sexual maturity, and they lay eggs in long, gelatinous strands.

Genera within the family Strombidae

* "Lambis" Röding, 1798 (nine known living species)
* "Strombus" Linné, 1758 (55 known living species)
* "Terebellum" Lamarck, 1799 (one known living species)
* "Tibia" Röding, 1798 (six known living species)
* "Varicospira" Eames, 1952 (three known living species).


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