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Bellastraea
''Bellastraea'' is a genus of sea snails, marine gastropod mollusks in the family Turbinidae, the turban snails. The Australian Faunal Directory considers this genus as a synonym of ''Astralium'' Link, 1807 Species Species within the genus ''Bellastraea'' include: * '' Bellastraea aurea'' (Jonas, 1844) * '' Bellastraea rutidoloma'' (Tate, 1893) * ''Bellastraea squamifera ''Bellastraea squamifera'', the scaly 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 30 mm. Distribution Thi ...'' (Koch, 1844) ;Species brought into synonymy: * ''Astraea kesteveni'' T. Iredale, 1924: synonym of ''Bellastraea squamifera'' (Koch, 1844) * ''Bellastraea kesteveni'' (Iredale, 1924): synonym of ''Bellastraea squamifera'' (Koch, 1844) * ''Bellastraea urvillei'' Philippi, R.A., 1852: synonym of '' Astralium tentoriiforme'' (Jonas, J.H., 1845) References * Ire ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bellastraea
''Bellastraea'' is a genus of sea snails, marine gastropod mollusks in the family Turbinidae, the turban snails. The Australian Faunal Directory considers this genus as a synonym of ''Astralium'' Link, 1807 Species Species within the genus ''Bellastraea'' include: * '' Bellastraea aurea'' (Jonas, 1844) * '' Bellastraea rutidoloma'' (Tate, 1893) * ''Bellastraea squamifera ''Bellastraea squamifera'', the scaly 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 30 mm. Distribution Thi ...'' (Koch, 1844) ;Species brought into synonymy: * ''Astraea kesteveni'' T. Iredale, 1924: synonym of ''Bellastraea squamifera'' (Koch, 1844) * ''Bellastraea kesteveni'' (Iredale, 1924): synonym of ''Bellastraea squamifera'' (Koch, 1844) * ''Bellastraea urvillei'' Philippi, R.A., 1852: synonym of '' Astralium tentoriiforme'' (Jonas, J.H., 1845) References * Ire ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bellastraea Squamifera
''Bellastraea squamifera'', the scaly 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 30 mm. Distribution This marine species is endemic to Australia and occurs off New South Wales, South Australia, Tasmania, Victoria and Western Australia Western Australia (commonly abbreviated as WA) is a state of Australia occupying the western percent of the land area of Australia excluding external territories. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to th .... References * 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 * Philippi, R.A. 1844. ''Abbildungen und Beschreibungen neuer oder wenig gekannter Conchylien''. Cassel : Theodor Fischer Vol. 1 pp. 77–204. * Pritchard, G.B. & Gatliff, J.H. 1906. ''Catalogue of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bellastraea Aurea
''Bellastraea aurea'', common name the golden small star, is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails. Description The height of the shell varies between 10 mm and 14 mm, its diameter between 12 mm and 19 mm. The small, solid, imperforate shell has a depressed-conic shape. Its color pattern is golden yellow or olive. The spire is low-conic and contains five whorls. These are scarcely convex above, and plicate at the sutures. The folds become fainter and frequently, bifurcating toward the periphery. The whorls are spirally lirate, the lirae below rather coarse, beaded, above finer, cutting the folds more or less into granules. The body whorl generally descends toward the aperture, and is compressed toward the periphery, which is subangular except in large specimens. The oblique aperture is rather small and is pearly white. The columellar callus is dilated over the umbilical region, and excavated there, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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. 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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'' (Reeve, 1843 ... [...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 scient ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astralium Tentoriiforme
''Astralium tentoriiforme'' , common name the common tent shell, is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails. Description The length of the shell varies between 25 mm and 45 mm. The imperforate, solid shell has an elate-conic shape. Its color pattern is pale yellowish. The spire is elevated and contains 7–8 whorls. These are very obliquely finely wrinkled and flat above. The base of the shell is concave. The periphery is acutely carinated, above the carina are obscurely longitudinally folded. The base contains numerous regular concentric squamose lirae. The aperture is very oblique. It is silvery within and angled at the carina. The basal margin is nearly straight, tinged with pink. The short columella is wide and arcuate, sometimes pinkish, terminating in a tubercle below. The parietal callus usually covers more than half the surface of the base. Its margin is often elevated. The operculum is oval, brown w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Snail
Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the absence of a visible shell. Definition Determining whether some gastropods should be called sea snails is not always easy. Some species that live in brackish water (such as certain neritids) can be listed as either freshwater snails or marine snails, and some species that live at or just above the high tide level (for example species in the genus '' Truncatella'') are sometimes considered to be sea snails and sometimes listed as land snails. Anatomy Sea snails are a very large group of animals and a very diverse one. Most snails that live in salt water respire using a gill or gills; a few species, though, have a lung, are intertidal, and are active only at low tide when they can move around in the air. These air-breathing species includ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marine (ocean)
The ocean (also the sea or the world ocean) is the body of salt water that covers approximately 70.8% of the surface of Earth and contains 97% of Earth's water. An ocean can also refer to any of the large bodies of water into which the world ocean is conventionally divided."Ocean." ''Merriam-Webster.com Dictionary'', Merriam-Webster, |
Gastropod
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. There are many thousands of species of sea snails and slugs, as well as freshwater snails, freshwater limpets, and land snails and slugs. The class Gastropoda contains a vast total of named species, second only to the insects in overall number. The fossil history of this class goes back to the Late Cambrian. , 721 families of gastropods are known, of which 245 are extinct and appear only in the fossil record, while 476 are currently extant with or without a fossil record. Gastropoda (previously known as univalves and sometimes spelled "Gasteropoda") are a major part of the phylum Mollusca, and are the most highly diversified class in the phylum, with 65,000 to 80,000 living snail and slug species. The anatomy, behavior, feeding, and re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mollusk
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is estimated between 60,000 and 100,000 additional species. The proportion of undescribed species is very high. Many taxa remain poorly studied. Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms. Numerous molluscs also live in freshwater and terrestrial habitats. They are highly diverse, not just in size and anatomical structure, but also in behaviour and habitat. The phylum is typically divided into 7 or 8 taxonomic classes, of which two are entirely extinct. Cephalopod molluscs, such as squid, cuttlefish, and octopuses, are among the most neurologically advanced of all invertebrates—and either the giant squid or the colossal squid is the largest known invertebrate species. The gas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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