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Anatoma Euglypta
''Anatoma euglypta'' is a species of very small sea snail, a marine gastropod mollusk or micromollusk in the family Anatomidae Anatomidae is a family of minute sea snails, marine gastropod mollusks in the clade Vetigastropoda (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005). Anatomidae was raised to the rank of subfamily to the rank of family .... Description The shell grows to a length of 11 mm. Distribution This marine species occurs in Antarctic and Subantarctic waters. References * Pelseneer, P. (1903). ''Zoologie: Mollusques (Amphineures, Gastropodes et Lamellibranches).'' Résultats du Voyage du S.Y. Belgica en 1897-1898-1899 sous le commandement de A. de Gerlache de Gomery: Rapports Scientifiques (1901–1913). Buschmann: Anvers. 85, IX plates pp * Zelaya D.G. & Geiger D.L. (2007). ''Species of Scissurellidae and Anatomidae from Sub-Antarctic and Antarctic waters (Gastropopda: Vetigastropoda)''. Malacologia 49(2):393–443. * G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paul Pelseneer
Jean Paul Louis Pelseneer (Brussels, 26 June 1863 – Brussels, 5 May 1945)Adam W. (1946). "Paul Pelseneer 1863–1945". ''Proceedings of the Malacological Society of London'' 26(6): 149-151PDF was a Belgian malacologist, morphologist, ethologist and phylogenist. In 1880, at the age of seventeen, Pelseneer became a member of the Belgian Malacological Society. He studied at the University of Brussels and in 1884 he obtained his doctor's degree in natural sciences. He continued his studies with the French zoologist Alfred Mathieu Giard at the marine laboratory in Wimereux (Université Lille Nord de France), and concluded his studies with the English invertebrate zoologist Ray Lankester at University College London. Pelseneer then became a teacher of chemistry at the Normal School in Ghent. He devoted himself to zoology during his spare time, without having a laboratory at his disposal. Pelseneer became recognized in Belgium as well as abroad as one of the most eminent zoologists ... [...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] |
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] |
Micromollusk
A micromollusk is a shelled mollusk which is extremely small, even at full adult size. The word is usually, but not exclusively, applied to marine mollusks, although in addition, numerous species of land snails and freshwater mollusks also reach adult size at very small dimensions. These tiny mollusks or their tiny shells are easy to overlook, as many of them are not very noticeable to the naked eye, and thus many people are not aware that they even exist. Nonetheless there are large numbers of families and vast numbers of mollusk species, in particular marine gastropods or sea snails, which are minute enough to be considered micromollusks. Considerable numbers of marine gastropod species are only about 5 or 6 mm in adult size; many others are only about 2 or 3 mm in adult size; and a few have adult shells which are as small as one millimeter or even smaller still. Despite their tiny size, many of the shells have a good deal of elaborate sculpture. A fair number ... [...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] |
Anatomidae
Anatomidae is a family of minute sea snails, marine gastropod mollusks in the clade Vetigastropoda (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005). Anatomidae was raised to the rank of subfamily to the rank of family in a study by Geiger & Jansen (2004). Bouchet & Rocroi placed it in the superfamily Scissurelloidea. This was disputed in 2008 by Yasunori Kano who does not believe that Anatomidae should be separated from Scissurellidae and actually states that it is the subfamily Anatominae. He suggests that this result was induced by contamination or mislabelling. This family has no subfamilies. Genera Genera within the family Anatomidae include: * ''Anatoma'' Woodward, 1859 * ''Sasakiconcha ''Sasakiconcha'' is a genus of sea snails, marine gastropod mollusks in the family Anatomidae Anatomidae is a family of minute sea snails, marine gastropod mollusks in the clade Vetigastropoda Vetigastropoda is a major taxonomic group ...'' Geige ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Belgian Antarctic Expedition
The Belgian Antarctic Expedition of 1897–1899 was the first expedition to winter in the Antarctic region. Led by Adrien de Gerlache de Gomery aboard the RV ''Belgica'', it was the first Belgian Antarctic expedition and is considered the first expedition of the Heroic Age of Antarctic Exploration. Among its members were Frederick Cook and Roald Amundsen, explorers who would later attempt the respective conquests of the North and South Poles. Preparation and surveying In 1896, after a period of intensive lobbying, Adrien Victor Joseph de Gerlache de Gomery purchased the Norwegian-built whaling ship ''Patria'', which, following an extensive refit, he renamed . Gerlache had worked together with the Geographical Society of Brussels to organize a national subscription, but was able to outfit his expedition only after the Belgian government voted in favor of two large subsidies, making it a state-supported undertaking. With a multinational crew that included Roald Amundsen from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adrien De Gerlache
Baron Adrien Victor Joseph de Gerlache de Gomery (; 2 August 1866 – 4 December 1934) was a Belgian officer in the Belgian Royal Navy who led the Belgian Antarctic Expedition of 1897–99. Early years Born in Hasselt in eastern Belgium as the son of an army officer, de Gerlache was educated in Brussels. From a young age he was deeply attracted by the sea, and made three voyages in 1883 and 1884 to the United States as a cabin boy on an ocean liner. He studied Engineering at the Free University of Brussels. After finishing his third year in 1885, he quit the university and joined the Belgian Navy on 19 January 1886. After graduating from the nautical college of Ostend he worked on fishery protection vessels as second and third lieutenant. In October 1887 he signed on as seaman on the ''Craigie Burn'', an English ship, for a voyage to San Francisco, but the ship failed to round Cape Horn and was sold for scrap in Montevideo. He returned to Europe after spending time in Urugua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anatoma
''Anatoma'' is a genus of minute marine gastropod molluscs or micromolluscs in the family Anatomidae, found in Europe, Australia and New Zealand. Bouchet, P.; Gofas, S. (2011). ''Anatoma'' Woodward, 1859. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=138464 on 2012-01-14, Description This genus is characterized by a slit in the margin of the outer lip, a rhipidoglossate radula, and a lack of nacre. Species The genus ''Anatoma'' includes the following species: *'' Anatoma aedonia'' (Watson, 1886) *'' Anatoma africana'' (Barnard, 1963) *'' Anatoma agulhasensis'' (Thiele, 1925) *'' Anatoma alta'' (Watson, 1886) *'' Anatoma alternatisculpta'' Geiger & McLean, 2010 * '' Anatoma amoena'' (Thiele, 1912) * '' Anatoma amydra'' Geiger & B.A. Marshall, 2012 * '' Anatoma argentinae'' (Zelaya & Geiger, 2007) *'' Anatoma aspera'' (Philippi, 1844) *'' Anatoma atlantica'' (Bandel, 1998) *'' Anatoma aupouria'' (Powell, 1937) *'' Anat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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