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Species of gastropod From Wikipedia, the free encyclopedia
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 | |
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Apertural view of Astralium rotularium | |
Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
Subclass: | Vetigastropoda |
Order: | Trochida |
Superfamily: | Trochoidea |
Family: | Turbinidae |
Genus: | Astralium |
Species: | A. rotularium |
Binomial name | |
Astralium rotularium | |
Synonyms[2] | |
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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]
This marine species is endemic to Australia and occurs off the Northern Territory, Queensland and Western Australia
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