Turritellidae

Turritellidae is a family of small to large marine gastropod mollusks, commonly known as turret snails or spiral shells. These snails are easily recognizable by their elongated, conical shells with numerous whorls, resembling a small tower. They are an ancient lineage, with fossils dating back to the Jurassic period. Turritellidae includes about 150 species, distributed worldwide in marine environments.

Vermicularia frisbeyae

Vermicularia spirata

Turritella nodulosa

Turritella Attenuata – Turritella attenuata

Turritella capensis

Auger Shell – Turritellinella tricarinata

Turritella ungulina

Turritella exoleta

Turritella turbona

Turritella bacillum

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Characteristics

Turritellidae shells are typically slender and elongated, with a pointed apex. They are usually smooth or finely sculptured, with numerous, closely spaced whorls. The aperture, or opening, is generally circular or oval, and the outer lip is simple. Some species may have a thickened or flared lip. The operculum, a horny plate that covers the aperture when the animal retracts, is small and thin. The foot is relatively large and flat, and the head is equipped with a pair of retractable tentacles and a pair of eyes.

Environments

Turritellidae species are found in a wide range of marine environments, from shallow intertidal zones to deep-sea environments. They are most commonly found on sandy or muddy bottoms, but can also be found on rocky substrates and in seagrass meadows. They are typically herbivorous, feeding on algae and other organic matter.

Common Names

Turritellidae are commonly known as:

  • Turret snails
  • Spiral shells
  • Tower snails

References