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Pycnotheca Biseptata
''Pycnotheca'' is a genus of hydroids in the family Kirchenpaueriidae Kirchenpaueriidae is a family of hydrozoans in the superfamily Plumularioidea. Their hydrocladia are characteristically set in an alternating fashion as one progresses along the stems, forming two neat rows except in '' Oswaldella laertesi'', w .... Species Three species are classified in this genus: *'' Pycnotheca biseptata'' (Blackburn, 1938) *'' Pycnotheca mirabilis'' (Allman, 1883) *'' Pycnotheca producta'' (Bale, 1881) References Kirchenpaueriidae Hydrozoan genera {{Leptothecata-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrozoa
Hydrozoa (hydrozoans; ) are a taxonomic class of individually very small, predatory animals, some solitary and some colonial, most of which inhabit saline water. The colonies of the colonial species can be large, and in some cases the specialized individual animals cannot survive outside the colony. A few genera within this class live in freshwater habitats. Hydrozoans are related to jellyfish and corals and belong to the phylum Cnidaria. Some examples of hydrozoans are the freshwater jelly (''Craspedacusta sowerbyi''), freshwater polyps ('' Hydra''), ''Obelia'', Portuguese man o' war (''Physalia physalis''), chondrophores (Porpitidae), "air fern" (''Sertularia argentea''), and pink-hearted hydroids (''Tubularia''). Anatomy Most hydrozoan species include both a polyp (zoology), polypoid and a medusa (biology), medusoid stage in their lifecycles, although a number of them have only one or the other. For example, ''Hydra'' has no medusoid stage, while ''Liriope tetraphylla, Lir ... [...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] |
Kirchenpaueriidae
Kirchenpaueriidae is a family of hydrozoans in the superfamily Plumularioidea. Their hydrocladia are characteristically set in an alternating fashion as one progresses along the stems, forming two neat rows except in '' Oswaldella laertesi'', which has three such rows. The alternating placement of the hydrocladia can be used to distinguish them from the Plumulariidae Plumulariidae is a family (biology), family of hydrozoans. Genus According to the World Register of Marine Species, the following genus, genera belong to this family: *''Callicarpa (hydrozoan), Callicarpa'' Fewkes, 1881 *''Cladacanthella'' Calde ... which may look superficially similar. There are six genera recognized in the family Kirchenpaueriidae: * '' Halicornopsis'' * '' Kirchenpaueria'' * '' Ophinella'' * '' Oswaldella'' * '' Pycnotheca'' * '' Wimveria'' References * MarineSpecies.org (2008)Kirchenpaueriidae Retrieved 2008-JUL-08. * Schuchert, Peter (2008) Retrieved 2008-JUL-08. Plumularioidea C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pycnotheca Biseptata
''Pycnotheca'' is a genus of hydroids in the family Kirchenpaueriidae Kirchenpaueriidae is a family of hydrozoans in the superfamily Plumularioidea. Their hydrocladia are characteristically set in an alternating fashion as one progresses along the stems, forming two neat rows except in '' Oswaldella laertesi'', w .... Species Three species are classified in this genus: *'' Pycnotheca biseptata'' (Blackburn, 1938) *'' Pycnotheca mirabilis'' (Allman, 1883) *'' Pycnotheca producta'' (Bale, 1881) References Kirchenpaueriidae Hydrozoan genera {{Leptothecata-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pycnotheca Mirabilis
''Pycnotheca mirabilis'', The feathery hydroid, is a colonial hydroid in the family Kirchenpaueriidae. Feathery hydroids are often white and grow in crowded colonies resembling upright feathers. The stems may grow to 3 cm in total height. The reproductive bodies are found at the base of the stems and resemble beehives. Millard, N.A.H. 1975. Monograph on the Hydroida of Southern Africa. ''Ann. S. Afr. Mus.'' 68:1-513 This colonial animal is found off the South African coast from False Bay to KwaZulu-Natal, as well as around the Indo-Pacific rim and Vema Seamount Vema Seamount is a seamount in the South Atlantic Ocean. Discovered in 1959 by a ship with the same name, it lies from Tristan da Cunha and northwest of Cape Town. The seamount has a flat top at a mean depth of which was eroded into the seamoun .... It lives from the subtidal to 50 m under water. This species eats microplankton. References {{Taxonbar, from=Q2918224 Kirchenpaueriidae Fauna of South Africa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pycnotheca Producta
''Pycnotheca'' is a genus of hydroids in the family Kirchenpaueriidae. Species Three species are classified in this genus: *''Pycnotheca biseptata'' (Blackburn, 1938) *''Pycnotheca mirabilis ''Pycnotheca mirabilis'', The feathery hydroid, is a colonial hydroid in the family Kirchenpaueriidae. Feathery hydroids are often white and grow in crowded colonies resembling upright feathers. The stems may grow to 3 cm in total height. ...'' (Allman, 1883) *'' Pycnotheca producta'' (Bale, 1881) References Kirchenpaueriidae Hydrozoan genera {{Leptothecata-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
