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Cyttus Australis
The silver dory (''Cyttus australis'') is a dory, in the genus '' Cyttus'', found around southern Australia, on the continental shelf A continental shelf is a portion of a continent that is submerged under an area of relatively shallow water, known as a shelf sea. Much of these shelves were exposed by drops in sea level during glacial periods. The shelf surrounding an island ... at depths of between 10 and 350 m. Its length is about 40 cm. References * * Cyttidae Fish described in 1843 {{Zeiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Richardson (naturalist)
Sir John Richardson FRS FRSE (5 November 1787 – 5 June 1865) was a Scottish naval surgeon, naturalist and Arctic The Arctic ( or ) is a polar region located at the northernmost part of Earth. The Arctic consists of the Arctic Ocean, adjacent seas, and parts of Canada ( Yukon, Northwest Territories, Nunavut), Danish Realm ( Greenland), Finland, Iceland ... explorer. Life Richardson was born at Nith Place in Dumfries the son of Gabriel Richardson, Provost of Dumfries, and his wife, Anne Mundell. He was educated at Dumfries Grammar School. He was then apprenticed to his maternal uncle, Dr James Mundell, a surgeon in Dumfries. He studied medicine at Edinburgh University, and became a surgeon in the navy in 1807. He traveled with John Franklin in search of the Northwest Passage on the Coppermine Expedition of 1819–1822. Richardson wrote the sections on geology, botany and ichthyology for the official account of the expedition. Franklin and Richardson returned to Ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dory (fish)
The common name ''dory'' (from the Middle English ''dorre'', from the Middle French ''doree'', lit. "gilded one") is shared (officially and colloquially) by members of several different families of large-eyed, silvery, deep-bodied, laterally compressed, and roughly discoid marine fish. As well as resembling each other, dories are also similar in habit: most are deep-sea and demersal. Additionally, many species support commercial fisheries as food fish. Most dory families belong to the order Zeiformes, suborder Zeioidei: *The "true dories", family Zeidae (five species, including the well-known John Dory) *The zeniontids, family Zenionidae or Zeniontidae (seven species) *The "Australian dories", family Cyttidae (three species all within the genus ''Cyttus'') *The oreos, family Oreosomatidae (ten species) *The parazen family, Parazenidae (four species, including the rosy dory) Additionally, several species of spinyfin (family Diretmidae, order Beryciformes) have been given ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below 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 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 of an ancestral taxon are grouped together (i.e. phylogenetic analysis should c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyttus
''Cyttus'' is the sole genus in the family Cyttidae a family of large, showy, deep-bodied zeiform marine fish. Members of this genus are found in the Atlantic, Indian, and Pacific Ocean. Species There are currently three recognized species in this genus: * ''Cyttus australis'' ( J. Richardson, 1843) (silver dory) * ''Cyttus novaezealandiae'' ( Arthur, 1885) (New Zealand dory) * ''Cyttus traversi The king dory or lookdown dory (''Cyttus traversi'') is a Dory, in the genus ''Cyttus'', found around South Africa, southern Australia, and New Zealand, over the continental shelf A continental shelf is a portion of a continent that is submer ...'' F. W. Hutton, 1872 (king dory) References * Ray-finned fish genera Taxa named by Albert Günther {{Zeiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australia
Australia, officially the Commonwealth of Australia, is a sovereign ''Sovereign'' is a title which can be applied to the highest leader in various categories. The word is borrowed from Old French , which is ultimately derived from the Latin , meaning 'above'. The roles of a sovereign vary from monarch, ruler or ... country comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands. With an area of , Australia is the largest country by area in Oceania and the world's sixth-largest country. Australia is the oldest, flattest, and driest inhabited continent, with the least fertile soils. It is a megadiverse country, and its size gives it a wide variety of landscapes and climates, with deserts in the centre, tropical Forests of Australia, rainforests in the north-east, and List of mountains in Australia, mountain ranges in the south-east. The ancestors of Aboriginal Australians began arriving from south east Asia approx ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Continental Shelf
A continental shelf is a portion of a continent that is submerged under an area of relatively shallow water, known as a shelf sea. Much of these shelves were exposed by drops in sea level during glacial periods. The shelf surrounding an island is known as an ''insular shelf''. The continental margin, between the continental shelf and the abyssal plain, comprises a steep continental slope, surrounded by the flatter continental rise, in which sediment from the continent above cascades down the slope and accumulates as a pile of sediment at the base of the slope. Extending as far as 500 km (310 mi) from the slope, it consists of thick sediments deposited by turbidity currents from the shelf and slope. The continental rise's gradient is intermediate between the gradients of the slope and the shelf. Under the United Nations Convention on the Law of the Sea, the name continental shelf was given a legal definition as the stretch of the seabed adjacent to the sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyttidae
''Cyttus'' is the sole genus in the family Cyttidae a family of large, showy, deep-bodied zeiform marine fish. Members of this genus are found in the Atlantic, Indian, and Pacific Ocean. Species There are currently three recognized species in this genus: * ''Cyttus australis'' ( J. Richardson, 1843) (silver dory) * '' Cyttus novaezealandiae'' (Arthur, 1885) (New Zealand dory) * ''Cyttus traversi The king dory or lookdown dory (''Cyttus traversi'') is a Dory, in the genus ''Cyttus'', found around South Africa, southern Australia, and New Zealand, over the continental shelf A continental shelf is a portion of a continent that is submer ...'' F. W. Hutton, 1872 (king dory) References * Ray-finned fish genera Taxa named by Albert Günther {{Zeiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
