Cassis madagascariensis

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Cassis madagascariensis
Cassis madagascariensis from Margarita Island.jpg
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): clade Caenogastropoda
clade Hypsogastropoda
clade Littorinimorpha
Superfamily: Tonnoidea
Family: Cassidae
Subfamily: Cassinae
Genus: Cassis
Subgenus: Cassis
Species: C. madagascariensis
Binomial name
Cassis madagascariensis
Lamarck, 1822
Synonyms

Cassis madagascariensis spinella Clench, 1944

Cassis madagascariensis is a marine gastropod mollusc in the family Cassidae, the cone shells and bonnet shells. [1]

Emperor/Queen Helmet Snail in the wild.

Distribution[edit]

This species occurs in the tropical Western Atlantic, the Gulf of Mexico and the Caribbean Sea. The specific name "madagascarensis" literally means "of Madagascar", but this was a misunderstanding of the type locality by the original author.

Description[edit]

The maximum recorded shell length is 409 mm.[2]

Habitat[edit]

United States Virgin Islands, St. John. Emperor/Queen Helmet Snails frequently observed (photographed) in depths as shallow as two feet.[3] This contradicts the previously reported minimum depth of 3 m.[2] The maximum recorded depth is 183 m.[2]

Human uses[edit]

Cameo by Ascione manufacture, 1925, Naples, Coral and Cameo Jewellery Museum.

Shells of Cassis madagascariensis are used in jewellery to make cameos.

References[edit]

  1. ^ Rosenberg, G. (2015). Cassis madagascariensis Lamarck, 1822. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=419778 on 2016-01-05
  2. ^ a b c Welch J. J. (2010). "The "Island Rule" and Deep-Sea Gastropods: Re-Examining the Evidence". PLoS ONE 5(1): e8776. doi:10.1371/journal.pone.0008776.
  3. ^ http://www.snorkelstj.com/helmet-snail.html
  • Rosenberg, G.; Moretzsohn, F.; García, E. F. (2009). Gastropoda (Mollusca) of the Gulf of Mexico, Pp. 579–699 in: Felder, D.L. and D.K. Camp (eds.), Gulf of Mexico–Origins, Waters, and Biota. Texas A&M Press, College Station, Texas.

External links[edit]