Bursa (gastropod)

Bursa is a genus of medium to large sea snails, marine gastropod mollusks in the family Bursidae, the frog shells.

Description

Snails in the genus Bursa are characterized by their distinctive shell shape, which is typically globose or ovate and often ornamented with prominent nodules, ribs, or spines. They possess a siphonal canal, which is often prominent and curved. The outer lip of the shell is thickened and typically toothed or fringed. The operculum is corneous and oval.

Distribution

Species within the genus Bursa are found in tropical and subtropical seas worldwide. They are commonly encountered in intertidal and shallow subtidal zones, often inhabiting rocky or coral reef environments.

Ecology

Bursa snails are predatory carnivores, feeding primarily on polychaete worms. They use their proboscis to probe for and capture their prey.

Taxonomy

The genus Bursa belongs to the family Bursidae, which is part of the superfamily Tonnoidea. The classification of species within the genus has been subject to revision, and further research is ongoing to clarify taxonomic relationships.

Species

The number of valid species within the genus Bursa varies depending on the taxonomic authority consulted. Many species have been described, and some are considered to be synonyms or subspecies of others. It is advised to consult updated malacological databases for the most accurate species list.