Bellastraea rutidoloma
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]
| Bellastraea rutidoloma | |
|---|---|
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| Apertural view of Bellastraea rutidoloma | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Clade: | Vetigastropoda |
| Order: | Trochida |
| Superfamily: | Trochoidea |
| Family: | Turbinidae |
| Genus: | Bellastraea |
| Species: | B. rutidoloma |
| Binomial name | |
| Bellastraea rutidoloma (Tate, 1893) [1] | |
| Synonyms | |
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Description
(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
This marine species is endemic to Australia and occurs off South Australia.
References
- 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
- Bellastraea rutidoloma (Tate, 1893). Retrieved through: World Register of Marine Species on 9 September 2012.
- 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.
