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Astralium
''Astralium'', common name star snails, is a genus of sea snails, marine gastropod mollusks in the family Turbinidae, the turban snails and star snails.Bouchet, P. (2012). ''Astralium'' Link, 1807. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=204985 on 2012-09-09 Description In ''Astralium'' a very rapidly enlarging whorl starts from the multispiral nucleus, forming far the greater portion of the operculum, and usually leaving a pit at the starting point. Distribution This marine genus has a wide distribution ranging from the Eastern Indian Ocean to China and Japan, the Philippines, Indonesia, East India, the Maldives and Australia ( New South Wales, Northern Territory, Queensland, South Australia, Tasmania, Victoria, Western Australia). Species According to the World Register of Marine Species (WoRMS), the following species are included within the genus ''Astralium'' : * '' Astralium asteriscum'' (R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astralium Calcar
''Astralium calcar'' is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails. Description The height of the shell is 28 mm, its diameter 40 mm. The conoid shell is more or less depressed at the apex. Its color pattern is grayish greenish, or brownish cinereous. The six whorls are flattened above, and radiately plicate, the folds rather unequal and irregular. The periphery is carinated spinose, bearing about twelve radiating more or less foliated spines upon the body whorl The body whorl is part of the morphology of the shell in those gastropod mollusks that possess a coiled shell. The term is also sometimes used in a similar way to describe the shell of a cephalopod mollusk. In gastropods In gastropods, the b .... This body whorl descends deeply toward the aperture. The convex base is concentrically more or less densely squamosely lirate. The outer lirae are generally prominent and subspinose, sometimes causing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turbinidae
Turbinidae, the turban snails, are a family of small to large marine gastropod molluscs in the superfamily Trochoidea.Bouchet, P. (2014). Turbinidae Rafinesque, 1815. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=503 on 2014-07-28 Description Turbinidae have a strong, thick calcareous operculum readily distinguishing them from the somewhat similar Trochidae or top snails, which have a corneous operculum. This strong operculum serves as a passive defensive structure against predators that try to enter by way of the aperture or that would break the shell at the outer lip. These operculum are rounded ovals that are flat with a swirl design on one side and domed on the other. They are known as Pacific cat's eye or Shiva eye shells or mermaid money, and are used for decorative purposes. Etymology The common name ''turban snail'' presumably refers to the shell's similarity in appearance to a turban. However, the sci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astralium Latispina
''Astralium latispina'' is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails.Rosenberg, G. (2012). ''Astralium latispina'' (Philippi, 1844). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=532418 on 2012-09-01 Description The length of the shell varies between 30 mm and 75 mm. The imperforate shell has a conic shape. It is greenish, brown maculated. The seven whorls are subplanate, obliquely costulate below the sutures, then with two beaded spiral lirae. The margins of the whorls are exserted, expanded, compressed, armed with triangular spines. The body whorl The body whorl is part of the morphology of the shell in those gastropod mollusks that possess a coiled shell. The term is also sometimes used in a similar way to describe the shell of a cephalopod mollusk. In gastropods In gastropods, the b ... is sharply carinate. The base of the shell is radi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astralium Lapillus
''Astralium lapillus'' is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails.Bouchet, P. (2012). ''Astralium lapillus''. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=581727 on 2012-09-01 Description The size of the shell varies between 14 mm and 25 mm. The imperforate shell has an obtusely turbinated shape. its color pattern is fulvous, tinged with red at the base. Most of the specimens are strongly covered with incrustations, which render it impossible to count the whorls. The whorls convexly slope next the suture, then become tumidly rounded. They are longitudinally rudely ribbed with ribs irregularly wrinkled and tuberculated. The convex base of the shell is very closely irregularly scaled, with indistinct spiral lirae and fine radiating lamellae. The margin is more or less lobed. The aperture has rose-colored margins. The interior of the aperture is g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astralium Haematragum
''Astralium haematragum'', common name the Pacific star shell, is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails. Description The size of the shell varies between 15 mm and 25 mm. The imperforate shell is pale ashen. It has an elevated-conic shape with an acute apex. The seven whorls are planulate above, with radiating oblique folds, which are produced into short spines at the periphery. The body whorl is carinated, with ten to twelve spines in a single series. The base of the shell is plano-concave, concentrically squamose-lirate. The aperture is transverse, channelled at the carina. The columella is arcuate, purple or blue margined, dentate at its base. Distribution This marine species occurs in the Southwest Pacific and off Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astralium Confragosum ''Astralium confragosum'' is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails.Bouchet, P. (2012). ''Astralium confragosum'' (Gould, 1851). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=581743 on 2012-09-01 Description The size of the shell varies between 15 mm and 36 mm. Rather low-conic shell is conspicuously radiately plicate above. The folds are somewhat sigmoid and oblique, bearing a series of short rounded knobs above, and terminating in short spines, eighteen to twenty in number, at the carinated periphery. The base of the shell is flat, squamosely lirate. The aperture is tinged with green, especially at the columella. The wrinkled operculum is deep green. |
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