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Cryptoconchus
''Cryptoconchus'' is a genus of chitons in the family Acanthochitonidae. Species * ''Cryptoconchus porosus ''Cryptoconchus porosus'', the butterfly chiton, is a species of chiton, a marine polyplacophoran mollusc in the family Acanthochitonidae. Description ''Cryptoconchus porosus'' is a large chiton reaching a length of about . The eight valves ...'' - the ''butterfly chiton'' * '' Cryptoconchus floridanus'' - the ''white-barred chiton'' Extinct species The genus is also represented in the fossil record, in Pliocene and Pleistocene rocks. References * * Powell A W B, ''New Zealand Mollusca'', William Collins Publishers Ltd, Auckland, New Zealand 1979 Acanthochitonidae Extant Pliocene first appearances {{Chiton-stub ...
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Cryptoconchus Porosus
''Cryptoconchus porosus'', the butterfly chiton, is a species of chiton, a marine polyplacophoran mollusc in the family Acanthochitonidae. Description ''Cryptoconchus porosus'' is a large chiton reaching a length of about . The eight valves A valve is a device or natural object that regulates, directs or controls the flow of a fluid (gases, liquids, fluidized solids, or slurries) by opening, closing, or partially obstructing various passageways. Valves are technically fittings ... are almost completely covered by a raised girdle, young specimens may have only seven. These are pale blue or white on top, sometimes sky blue underneath, and when removed from the animal they each resemble a butterfly giving the common name. The girdle is fleshy and smooth with short sutural bristles that protrude from 18 rounded pores, which are elevated and run in two crested rows from head to tail. The colour of the dorsal surface can range from dark brown to bright orange, while the unde ...
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Cryptoconchus Floridanus
''Cryptoconchus'' is a genus of chitons in the family Acanthochitonidae. Species * ''Cryptoconchus porosus ''Cryptoconchus porosus'', the butterfly chiton, is a species of chiton, a marine polyplacophoran mollusc in the family Acanthochitonidae. Description ''Cryptoconchus porosus'' is a large chiton reaching a length of about . The eight valves ...'' - the ''butterfly chiton'' * '' Cryptoconchus floridanus'' - the ''white-barred chiton'' Extinct species The genus is also represented in the fossil record, in Pliocene and Pleistocene rocks. References * * Powell A W B, ''New Zealand Mollusca'', William Collins Publishers Ltd, Auckland, New Zealand 1979 Acanthochitonidae Extant Pliocene first appearances {{Chiton-stub ...
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Chiton
Chitons () are marine molluscs of varying size in the class Polyplacophora (), formerly known as Amphineura. About 940 extant and 430 fossil species are recognized. They are also sometimes known as gumboots or sea cradles or coat-of-mail shells or suck-rocks, or more formally as loricates, polyplacophorans, and occasionally as polyplacophores. Chitons have a shell composed of eight separate shell plates or valves. These plates overlap slightly at the front and back edges, and yet articulate well with one another. Because of this, the shell provides protection at the same time as permitting the chiton to flex upward when needed for locomotion over uneven surfaces, and even allows the animal to curl up into a ball when dislodged from rocks. The shell plates are encircled by a skirt known as a girdle. Habitat Chitons live worldwide, from cold waters through to the tropics. They live on hard surfaces, such as on or under rocks, or in rock crevices. Some species live quite hi ...
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Acanthochitonidae
Acanthochitonidae is a family of chitons, marine molluscs in the class Polyplacophora. Description These small to large chitons are characterised by a broad girdle with erect tufts of up to ten large bristles. The coarsely granular valves of the shell are partially overlapped by the girdle. This girdle is all covered by coarse spines. The articulating flange, or ''articulamentum'', is well developed. The margin of the cephalic plate has about five slits. The lateral'' insertion plates'' all have a single notch. Genera According to the World Register of Marine Species (WoRMS) the following genera are included in this family * Acanthochitona Gray, 1821 * Amycula * Bassethullia Pilsbry, 1928 * Choneplax Carpenter MS, Dall, 1882 * Craspedochiton Shuttleworth, 1853 * Craspedoplax Iredale & Hull, 1925 * Cryptoconchus de Blainville MS, Burrow, 1815 * Leptoplax Carpenter MS, Dall, 1882 * Notoplax ''Notoplax'' is a genus of chitons in the family Acanthochitonidae.Bouchet, P. ...
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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 ...
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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 ...
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Arthur William Baden Powell
Arthur William Baden Powell (4 April 1901 – 1 July 1987) was a New Zealand malacologist, naturalist and palaeontologist, a major influence in the study and classification of New Zealand molluscs through much of the 20th century. He was known to his friends and family by his third name, "Baden". Biography Early life The name Baden had been a given name in a Powell family since 1731, when Susannah Powell née Thistlethwayte (1696–1762) gave to her child (1731–1792) the maiden name of her mother, Susannah Baden (1663–1692). The name Baden, particularly when associated with the surname Powell, became famous in 1900–1901, the year Arthur William Baden Powell was born, because of the siege of Mafeking, the most famous British action in the Second Boer War, which turned the British commander of the besieged, Robert Baden-Powell, into a national hero. Throughout the British Empire, babies were named after him. No family connection has yet been established between Arthur W ...
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HarperCollins
HarperCollins Publishers LLC is one of the Big Five English-language publishing companies, alongside Penguin Random House, Simon & Schuster, Hachette, and Macmillan. The company is headquartered in New York City and is a subsidiary of News Corp. The name is a combination of several publishing firm names: Harper & Row, an American publishing company acquired in 1987—whose own name was the result of an earlier merger of Harper & Brothers (founded in 1817) and Row, Peterson & Company—together with Scottish publishing company William Collins, Sons (founded in 1819), acquired in 1989. The worldwide CEO of HarperCollins is Brian Murray. HarperCollins has publishing groups in the United States, Canada, the United Kingdom, Australia, New Zealand, Brazil, India, and China. The company publishes many different imprints, both former independent publishing houses and new imprints. History Collins Harper Mergers and acquisitions Collins was bought by Rupert Murdoch's News Corpora ...
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