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Margarella Steineni
''Margarella steineni'' is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.Rosenberg, G. (2012). ''Margarella steineni'' (Strebel, 1905). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=533030 on 2012-12-07Zelaya D.G. (2004) The genus Margarella Thiele, 1893 (Gastropoda: Trochidae) in the southwestern Atlantic Ocean. The Nautilus 118(3): 112-120. The species was named after Karl von den Steinen, who accompanied the German Antarctic expedition (1901–1903). Description The height of the shell attains 12.5 mm. Distribution This marine species occurs off the South Georgia Islands ) , anthem = "God Save the King" , song_type = , song = , image_map = South Georgia and the South Sandwich Islands in United Kingdom.svg , map_caption = Location of South Georgia and the South Sandwich Islands in the southern Atlantic Oce ... at depths between 0 m and 26 m. References Extern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hermann Strebel (malacologist)
Hermann Wilhelm Strebel ( Hamburg, 1 January 1834 – Hamburg, 6 November 1914) was a merchant, ethnologue and a malacologist from Germany and Mexico. Biography He was born on 1 January 1834 in Hamburg as the youngest of four brothers. Through his school teacher he became interested in the study of snails and their shells On 13 August 1848, he left for Veracruz in Mexico. Under the supervision of his eldest brother he became an apprentice in a factory. He would stay in Mexico for the next twenty years. He survived a shipwreck off the coast of Yucatán. Between 1852 and 1867 he worked as a merchant for German exporters of manufactured goods. During this time he began under the guidance of his friend Carl Hermann Berendt collecting shells of native snails, which would constitute the basis of his collection. At this time, he began a lively exchange with German and American malacologists. He was also introduced by Berendt to zoology and archeology In 1860 he married Inés Mahn, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...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] |
Family (biology)
Family ( la, familia, plural ') is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calliostomatidae
Calliostomatidae is a family of sea snails within the superfamily Trochoidea and the clade Vetigastropoda.Gofas, S. (2013). Calliostomatidae. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=382180 on 2013-07-08 Description The Calliostomatidae are unusually diverse. They are characterized by a stepped spire and a pointy aperture. They may possess or lack an umbilicus. The collumella is sometimes thicker, partially covering the aperture. The spiral whorls can differ between narrow and robust. They inhabit a wide range of ocean habitats, from the intertidal zone to mid- bathyal depths. Taxonomy This taxon was long considered to be a subfamily of the Trochidae. 2005 taxonomy This family consists of two following subfamilies (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005): * subfamily Calliostomatinae Thiele 1924 (1847) ** tribe Calliostomatini Thiele 1924 (1847) - synonym: Ziziphininae G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Register Of Marine Species
The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms. Content The content of the registry is edited and maintained by scientific specialists on each group of organism. These taxonomists control the quality of the information, which is gathered from the primary scientific literature as well as from some external regional and taxon-specific databases. WoRMS maintains valid names of all marine organisms, but also provides information on synonyms and invalid names. It is an ongoing task to maintain the registry, since new species are constantly being discovered and described by scientists; in addition, the nomenclature and taxonomy of existing species is often corrected or changed as new research is constantly being published. Subsets of WoRMS content are made available, and can have separate badging and their own home/launch pages, as "subregisters", such as the ''World List of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karl Von Den Steinen
Karl von den Steinen (born March 7, 1855 in Mülheim, died November 4, 1929 in Kronberg im Taunus) was a German physician (with emphasis in psychiatry), ethnologist, explorer, and author of important anthropological work, which is particularly to the study of Indian cultures of Central Brazil, and the art of the Marquesas. He laid the permanent foundations for Brazilian ethnology. Exploration * 1879-1881: A journey around the earth * 1882-1883: First German International Polar Year Expedition to South Georgia * 1884: The first expedition to the Xingu River region of Brazil (see Xingu Indigenous Park) * 1887-1888: Second Expedition into the Xingú region (Brazil) * 1897-1898: expedition to the South Sea Islands (Marquesas) Works * ''Durch Central-Brasilien: Expedition zur Erforschung des Schingú im J. 1884'' (''Through Central-Brazil: expedition to explore the Xingú in the year 1884''). Brockhaus, Leipzig 1886; Reprint: Fines Mundi, Saarbrücken 2006 * ''Die Bakaïrí-Spr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Georgia Islands
) , anthem = "God Save the King" , song_type = , song = , image_map = South Georgia and the South Sandwich Islands in United Kingdom.svg , map_caption = Location of South Georgia and the South Sandwich Islands in the southern Atlantic Ocean , mapsize = 255px , subdivision_type = Sovereign state , subdivision_name = , established_title2 = Separation from Falkland Islands , established_date2 = 3 October 1985 , official_languages = English , demonym = , capital = King Edward Point , coordinates = , largest_settlement = capital , largest_settlement_type = largest settlement , ethnic_groups = , ethnic_groups_year = , government_type = Directly administered dependency under a constitutional monarchy , leader_title1 = Monarch , leader_name1 = Charles III , leader_title2 = Commissioner , leader_name2 = Alison Blake , national_representation = Government of the United Kingdom , national_representation_type1 = Minister , national_representation1 = Zac Gol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Margarella
''Margarella'' is a genus of sea snails, marine gastropod molluscs in the subfamily Margarellinae of the family Calliostomatidae.Bouchet, P. (2012). Margarella Thiele, 1893. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=196989 on 2012-12-07 Species Species within the genus ''Margarella'' include: * '' Margarella achilles'' (Strebel, 1908) * '' Margarella antarctica'' (Lamy, 1905) * '' Margarella bouvetia'' Powell, 1951 * '' Margarella crebrilirulata'' (E.A. Smith, 1907) * '' Margarella expansa'' (Sowerby I, 1838) * '' Margarella gunnerusensis'' Numanami, 1996 * '' Margarella jason'' A. W. B. Powell, 1951 * '' Margarella macquariensis'' Hedley, 1916 * '' Margarella obsoleta'' A. W. B. Powell, 1951 * '' Margarella porcellana'' A. W. B. Powell, 1951 * ''Margarella pruinosa'' (Rochebrune & Mabille, 1885) * '' Margarella refulgens'' (E.A. Smith, 1907) * † '' Margarella runcinata'' Marwick, 1928 * '' Margarella steineni'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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