|
Astraea (gastropod)
''Astraea'' is a genus of medium to large sea snails, marine gastropod mollusks in the family Turbinidae, the turban snails.Bouchet, P. (2012). Astraea Röding, 1798. Accessed through: World Register of Marine Species aWoRMS taxon detailson 2012-03-15 Etymology The Latin genus ''Astraea'' means ''star'', with reference to the star-shape of these snails, also commonly called ''star shells''. Description Shells of species within this genus can reach a size of about . They have the appearance of a smooth conical shell. The outer edges of the coiled whorls are quite flattened, with prominent axial sculpture. Below widely, it is umbilicate and concave. Species Extant species within this genus include: *''Astraea heliotropium'' (Martyn, 1784) Fossil records This genus is known in the fossil records from the Paleocene to the Quaternary (age range: from 61.7 to 0.0 million years ago). Fossils of species within this genus have been found in the sediments of Europe, Australia, United S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paleocene
The Paleocene, ( ) or Palaeocene, is a geological epoch (geology), epoch that lasted from about 66 to 56 mya (unit), million years ago (mya). It is the first epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name is a combination of the Ancient Greek ''palaiós'' meaning "old" and the Eocene Epoch (which succeeds the Paleocene), translating to "the old part of the Eocene". The epoch is bracketed by two major events in Earth's history. The K–Pg extinction event, brought on by Chicxulub impact, an asteroid impact and possibly volcanism, marked the beginning of the Paleocene and killed off 75% of living species, most famously the non-avian dinosaurs. The end of the epoch was marked by the Paleocene–Eocene Thermal Maximum (PETM), which was a major climatic event wherein about 2,500–4,500 gigatons of carbon were released into the atmosphere and ocean systems, causing a spike in global temperatures and ocean acidification. In the Pal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bolma Andersoni
''Bolma andersoni'', common name Anderson's 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 50 mm and 87 mm. Distribution This species occurs in the Western Indian Ocean between Transkei and KwaZuluNatal KwaZulu-Natal (, also referred to as KZN and known as "the garden province") is a province of South Africa that was created in 1994 when the Zulu bantustan of KwaZulu ("Place of the Zulu" in Zulu) and Natal Province were merged. It is locate .... References Beu A.G. & Ponder W.F. (1979) ''A revision of the species of Bolma Risso, 1826 (Gastropoda: Turbinidae)''. Records of the Australian Museum 32(1): 1-68* Kilburn, R.N. & Rippey, E. (1982) ''Sea Shells of Southern Africa''. Macmillan South Africa, Johannesburg, xi + 249 pp. page(s): 48 * Steyn, D.G. & Lussi, M. (1998) ''Marine Shells of South Africa. An Illustrated Collector’s Guide to Beache ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bolma Johnstoni
''Bolma johnstoni'' is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails. Description The shell grows to a length of 37 mm Distribution This species occurs in the Atlantic Ocean off Sierra Leone and Angola , national_anthem = " Angola Avante"() , image_map = , map_caption = , capital = Luanda , religion = , religion_year = 2020 , religion_ref = , coordina .... References * Odhner, N.H. (1923) ''Contribution to the marine molluscan faunas of South and West Africa''. Meddelanden fran Göteborgs Musei Zoologiska Avdelning, 23, 1–39, 1 pl. * Nolf F. 2005. ''A new species of Bolma (Gastropoda: Turbinoidea: Turbinidae) from Angola''. Neptunea 4 (5) : 1–7 * Gofas, S.; Afonso, J.P.; Brandào, M. (Ed.). (S.a.). ''Conchas e Moluscos de Angola = Coquillages et Mollusques d'Angola. hells and molluscs of Angola'. Universidade Agostinho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bolma Jacquelineae
''Bolma jacquelineae'' is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails. Description The size of the adult shell varies between 22 mm and 30 mm. Distribution This species is found in the Atlantic Ocean off Sierra Leone, Angola and in the Western Mediterranean Sea The Mediterranean Sea is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean Basin and almost completely enclosed by land: on the north by Western and Southern Europe and Anatolia, on the south by North Africa, and on the .... References * * Marche–Marchad, I., 1957. Description de cinq gastropodes marins nouveaux de la côte occidentale d'Afrique. Bulletin du Muséum national d'Histoire naturelle 29(2): 200–205, 1 pl, sér. 2° série * Nolf F. 2005. ''A new species of Bolma (Gastropoda: Turbinoidea: Turbinidae) from Angola''. Neptunea 4 (5) : 1–7 * Nolf F. (2010) ''About the variability of Bolma jacquelinae (Marche–Mar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bembicium Hokianga
''Bembicium hokianga'' is an extinct species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ... of sea snail, a marine gastropod mollusk in the family (biology), family Littorinidae, the winkles or periwinkles. References Littorinidae Gastropods described in 1988 {{Littorinidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astralium Heimburgi
''Astralium heimburgi'' is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails.Bouchet, P. (2012). ''Astralium heimburgi''. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=581747 on 2012-09-01 Description The size of the shell varies between 20 mm and 25 mm. The conic shell is imperforate. The five whorls are flattened and subgranosely densely lirate. The periphery is carinated, armed with compressed imbricated subdeflexed spines. The base of the shell is plano-convex, ornamented with spiral subimbricated lirae. The columella has an oblong excavation at its termination. The aperture is subrotund, silvery margaritaceous within. The shell color is whitish, subroseous at the base. Distribution This marine species occurs off Japan and Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania between the Indian an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bolma Bathyraphis
''Bolma bathyraphis'' is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails.Bouchet, P. (2012). ''Bolma bathyraphis'' (E. A. Smith, 1899). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=581863 on 2012-09-01 Description The size of the shell attains 35 mm. The imperforate shell has a turbinate shape with a conical spire, nine whorls and deeply, broadly canaliculate sutures. The spire is marked by a row of granules. The white apex is obtuse and plane. The periphery is formed of a squamose keel which is spirally irregularly striated. it ascends the spire above the sutural furrow, and between it and the suture there is a series of very small white granules. Of the row of granules upon the lower half of the body whorl, the third from the periphery is a little larger than the first and second and much larger than those below. Both above and below this third row a few spiral ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lithopoma Tuber
''Lithopoma tuber'', common name the green star shell, is a species of large sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails. Description The size of the shell varies between 25 mm and 75 mm. The imperforate, very solid shell has a turbinate-conic shape. Its color pattern is dirty white or pale green, radiately maculated with brown above, irregularly marked and lighter below. The shell contains six whorls. The upper two are smooth by erosion, the following whorls are obliquely coarsely plicate and finely wrinkled in the same direction above, somewhat shouldered. They are obtusely angular near the periphery, above which several obscure beaded lirae revolve, shagreened by intersection of incremental striae and oblique wrinkles. The base of the shell is nearly smooth. The oval aperture is very oblique and silvery within. The short columella is wide, and generally bituberculate at the base, excavated over the location of the umbilicu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astralium Danieli
''Astralium danieli'' is a species of sea snail, a marine gastropod mollusk in the family 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 ..., the turban snails. Description Distribution This marine species occurs off Bali, Indonesia. References * Alf & Kreipl. 2006. Spixiana Volume: 29 Issue: 1 Pages: 91–93 * 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 danieli Gastropods described in 2006 {{Turbinidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lithopoma Tectum
''Lithopoma tectum'', common name the West Indian starsnail, is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails. Distribution This species occurs in the Caribbean Sea, the Gulf of Mexico and the Lesser Antilles; in the Atlantic Ocean off Brazil. Description The maximum recorded shell length is 63 mm.Welch J. J. (2010). "The "Island Rule" and Deep-Sea Gastropods: Re-Examining the Evidence". '' PLoS ONE'' 5(1): e8776. . The imperforate, solid shell has an elevated-conic shape. It is longitudinally subobliquely crinkled. Its color pattern is reddish orange, marked in places with white and olivaceous. The suture is impressed and irregular. The 6½ whorls are subplanulate above, slightly concave in the middle. The apical one or two are smooth, the following longitudinally plicate. The folds are cut in the middle by two impressed spiral lines, projecting at the carinated periphery, and about twenty-three in number on the bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cookia Sulcata
''Cookia sulcata'', or Cook's turban, is a species of large sea snail, a marine gastropod mollusc in the family Turbinidae, the turban snails.Bouchet, P. (2012). Cookia sulcata (Lightfoot, 1786). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=413403 on 2012-03-15 Description The length of the shell varies between 50 mm and 90 mm. The large, imperforate, rather thin shell is conic. The periphery is rounded. The spire is more or less elevated. The sutures are deeply impressed. The seven whorls are well rounded, with close lamellose incremental striae, and corrugated by obliquely descending subtuberculose folds. The base is flattened bearing concentric densely squamose lirae, deeply concave in the center, and indented in the place of the umbilicus. The aperture is transversely oval, very oblique, pearly and somewhat corrugated within. The thin columella is arcuate. The umbilical region and part of base i ... [...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. 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 the periphery to appear bicarinate. The aperture is transversely oval, very oblique, generally golden within, and stained with purple or blue on the columella. Distribution This marine species occurs off the Philippines, Indo-Malaysia and Queensland, Austra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
