Cassis cornuta

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Cassis cornuta
Cassis cornuta shell.jpg
A shell of Cassis cornuta
Cassis cornuta 01.jpg
Five views of a shell of Cassis cornuta
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Littorinimorpha
Family: Cassidae
Genus: Cassis
Species:
C. cornuta
Binomial name
Cassis cornuta
Synonyms
  • Buccinum cornutum Linnaeus, 1758 (basionym)
  • Cassis amboinensisPetivier in Tryon, G.W., 1885
  • Cassis brevirostrumPetivier in Tryon, G.W., 1885
  • Cassis caputequinum Röding, 1798
  • Cassis hamata Röding, 1798
  • Cassis labiataDillwyn, L.W., 1817

Cassis cornuta, common name the horned helmet, is a species of extremely large sea snail, a marine gastropod mollusc in the family Cassidae, the helmet shells and their allies. [1]

Contents

Description

The length of the shell varies between 50 mm and 410 mm. It is the largest of all helmet shells. It has a very solid, heavy, rotund shell with large, horn-like knobs and a wide, flat base. The shell has a dorsally pale orange colour, its base vivid orange, faintly marked with white and brown. [1]

Habitat

This large sea snail is found on sand and coral rubble, often around reefs.

Distribution

This species occurs in the Red Sea, the Indian Ocean, off the southern African coast from northern KwaZulu-Natal and from Mozambique, [2] as well as in the Pacific Ocean.

Relevance to humans

The shell of Cassis cornuta is a very popular collector's item. In some places the snail is hunted for meat and is traditionally roasted in the shell over fire. Because of both of these factors, humans are a major enemy, and the species is now at risk in many places. However, worldwide it is not listed in the Red List. Because this snail hunts the crown-of-thorns starfish, which feed on corals, Cassis cornuta has been put under strict protection in Queensland.

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References

  1. 1 2 Rosenberg, G. (2012). Cassis cornuta (Linnaeus, 1758). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=208963 on 2012-11-25
  2. Steyn, D.G. & Lussi, M. 2005. Offshore Shells of Southern Africa ISBN   0-620-33607-2