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Bellastraea rutidoloma

From Wikipedia, the free encyclopedia

Bellastraea rutidoloma
Apertural view of Bellastraea rutidoloma
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Vetigastropoda
Order: Trochida
Superfamily: Trochoidea
Family: Turbinidae
Genus: Bellastraea
Species:
B. rutidoloma
Binomial name
Bellastraea rutidoloma
(Tate, 1893) [1]
Synonyms
  • Astralium rutidoloma Tate, 1893
  • Turbo (Astralium) rutidoloma Tate, 1893 (original description)

Bellastraea rutidoloma, common name the granular small star, is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails.[2]

Description

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(Original description by R. Tate) The shell has a lenticular-conoid shape, about equally sloping above and below from the angular periphery. The 4½ whorls are flat. The embryonic contains 1½ whorls fimbriated at the suture. The umbilicus is minute. The upper surface of the body whorl shows a stout and a broad lira next to the suture, which is transversely crenulate-ridged. The periphery is bluntly angled by a slightly compressed convex keel, which is obsoletely crenulated. Between the keel and the sutural band are three granulose lirae about equidistant and equal-sized but the anterior one is close to the keel (in older specimens a small lira is interposed next the suture, and there is a tendency in the granules of the lirae to become somewhat confluent). The intervals between the lirae are smooth. The base has four granulose lirae. The umbilical region is bounded by a broad ridge, which is broken up into claviform tubercles obliquely disposed. The colour is greenish-brown in living specimens, flesh-coloured with rufous lirae and darker tinted at the suture and keel in beach examples. The interior of the aperture of living examples is greenish and of a pearly lustre.[3]

Distribution

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This marine species is endemic to Australia and occurs off South Australia.

References

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  1. ^ Tate, R. 1893. Some additions to the list of the Marine Gastropoda of South Australia. Transactions of the Royal Society of South Australia 17(1): 189–202
  2. ^ Bellastraea rutidoloma (Tate, 1893). Retrieved through: World Register of Marine Species on 9 September 2012.
  3. ^ Transactions of the Royal Society of South Australia v.17 (1892–1893)
  • Cotton, B.C. 1959. South Australian Mollusca. Archaeogastropoda. Handbook of the Flora and Fauna of South Australia. Adelaide : South Australian Government Printer 449 pp
  • Williams, S.T. (2007). Origins and diversification of Indo-West Pacific marine fauna: evolutionary history and biogeography of turban shells (Gastropoda, Turbinidae). Biological Journal of the Linnean Society, 2007, 92, 573–592.
  • 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.