Astralium rotularium

Astralium rotularium, common name the rotary star shell or the knob star shell, is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails.[2][3]

Astralium rotularium
Apertural view of Astralium rotularium
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Clade: Vetigastropoda
Order: Trochida
Superfamily: Trochoidea
Family: Turbinidae
Genus: Astralium
Species:
A. rotularium
Binomial name
Astralium rotularium
(Lamarck, 1822) [1]
Synonyms[2]
  • Trochus rotularius Lamarck, 1822

Description

The size of the shell varies between 25 mm and 50 mm. The white, subdepressed, imperforate shell has a conoid shape. The spire is subacute. The six whorls are obliquely finely costulate with numerous prominent imbricating laterally compressed plicae at the sutures. The body whorl is carinated with plicate-nodose carina. The base of the shell is convex, squamosely concentrically lirate. The white columella is arcuate, not dentate. The aperture is oblique.[4]

Distribution

This marine species is endemic to Australia and occurs off the Northern Territory, Queensland and Western Australia

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References
  1. Lamarck, J.B.P.A. de M. 1822. Histoire Naturelle des Animaux sans Vertèbres. Suite des Gastéropodes. Paris : J.B. Lamarck Vol. 6(2) 232 pp.
  2. Bouchet, P. (2012). Astralium rotularium (Lamarck, 1822). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=581733 on 2012-09-01
  3. Alf A. & Kreipl K. (2011) The family Turbinidae. Subfamilies Turbininae Rafinesque, 1815 and Prisogasterinae Hickman & McLean, 1990. In: G.T. Poppe & K. Groh (eds), A Conchological Iconography. Hackenheim: Conchbooks. pp. 1-82, pls 104-245.
  4. G.W. Tryon (1888), Manual of Conchology X; Academy of Natural Sciences, Philadelphia
  • Wilson, B.R. & Gillett, K. 1971. Australian Shells: illustrating and describing 600 species of marine gastropods found in Australian waters. Sydney : Reed Books 168 pp
  • Wilson, B. 1993. Australian Marine Shells. Prosobranch Gastropods. Kallaroo, Western Australia : Odyssey Publishing Vol. 1 408 pp.
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