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Virgulariidae
Virgulariidae is a family of sea pens, a member of the subclass Octocorallia in the phylum Cnidaria. Characteristics Colonies are bilateral, long and slender to very slender. The colony axis is noticeable and present throughout.Williams G.C., 1990: The Pennatulacea of southern Africa (Coelenterata, Anthozoa). Annals Of The South African Museum. 99(4): 31-119. Genera The World Register of Marine Species lists the following genera: *'' Acanthoptilum'' Kölliker, 1870 *'' Grasshoffia'' Williams, 2015Williams, G. (2015''A new genus and species of pennatulacean octocoral from equatorial West Africa (Cnidaria, Anthozoa, Virgulariidae)''.ZooKeys 546, 39-50 *'' Scytaliopsis'' Gravier, 1906 *'' Scytalium'' Herklots, 1858 *'' Stylatula'' Verrill, 1864 *''Virgularia ''Virgularia'' is a genus of sea pen in the family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Virgulariidae
Virgulariidae is a family of sea pens, a member of the subclass Octocorallia in the phylum Cnidaria. Characteristics Colonies are bilateral, long and slender to very slender. The colony axis is noticeable and present throughout.Williams G.C., 1990: The Pennatulacea of southern Africa (Coelenterata, Anthozoa). Annals Of The South African Museum. 99(4): 31-119. Genera The World Register of Marine Species lists the following genera: *'' Acanthoptilum'' Kölliker, 1870 *'' Grasshoffia'' Williams, 2015Williams, G. (2015''A new genus and species of pennatulacean octocoral from equatorial West Africa (Cnidaria, Anthozoa, Virgulariidae)''.ZooKeys 546, 39-50 *'' Scytaliopsis'' Gravier, 1906 *'' Scytalium'' Herklots, 1858 *'' Stylatula'' Verrill, 1864 *''Virgularia ''Virgularia'' is a genus of sea pen in the family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Virgularia
''Virgularia'' is a genus of sea pen in the family Virgulariidae. Species *'' Virgularia abies'' Kölliker, 1870 *'' Virgularia agassizi'' Studer, 1894 *'' Virgularia alba'' (Nutting, 1912) *''Virgularia brochi'' Kükenthal, 1915 *''Virgularia bromleyi'' Kölliker, 1880 *''Virgularia densa'' Tixier-Durivault, 1966 *''Virgularia galapagensis'' Hickson, 1930 *''Virgularia glacialis'' Kölliker, 1870 *''Virgularia gracilis'' *''Virgularia gracillima'' Kõlliker, 1880 *''Virgularia gustaviana'' (Herklots, 1863) *''Virgularia halisceptrum'' Broch, 1910 *''Virgularia juncea'' (Pallas, 1766) *''Virgularia kophameli'' May, 1899 *''Virgularia loveni'' Utinomi, 1971 *''Virgularia mirabilis'' (Müller, 1776) *''Virgularia presbytes'' Bayer, 1955 *''Virgularia reinwardti'' Herklots, 1858 *''Virgularia rumphi'' Kölliker, 1870 *''Virgularia schultzei'' Kukenthal, 1910 *''Virgularia tuberculata ''Virgularia'' is a genus of sea pen in the family Virgulariidae. Species *'' Virgularia abie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Feathery Sea Pen
The feathery sea pen (''Virgularia schultzei'') is a species of Pennatulacea, sea pen in the Family (biology), family Virgulariidae.Williams G.C., (1990) The Pennatulacea of southern Africa (Coelenterata, Anthozoa). Annals Of The South African Museum. 99(4): 31-119, Cape Town. Branch, G.M., Branch, M.L, Griffiths, C.L. and Beckley, L.E. 2010. ''Two Oceans: a guide to the marine life of southern Africa'' Description Feathery sea pens stand upright in the sand like the quill of a feather. The central axis has flat branch-like extensions on which the polyps are clustered. They are usually white or cream. The peduncle is very long and the entire colony can retract into the sand if disturbed. This species may grow to 50 cm in height and is about 1 cm wide.Jones, G. (2008) ''A field guide to the marine animals of the Cape Peninsula.'' SURG, Cape Town. Distribution and habitat The Feathery Sea Pen is known from Luderitz in Namibia and round the southern African coast to cent ... [...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] |
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] |
Octocorallia
Octocorallia (also known as Alcyonaria) is a class of Anthozoa comprising around 3,000 species of water-based organisms formed of colonial polyps with 8-fold symmetry. It includes the blue coral, soft corals, sea pens, and gorgonians (sea fans and sea whips) within three orders: Alcyonacea, Helioporacea, and Pennatulacea. These organisms have an internal skeleton secreted by mesoglea and polyps with eight tentacles and eight mesentaries. As with all Cnidarians these organisms have a complex life cycle including a motile phase when they are considered plankton and later characteristic sessile phase. Octocorals have existed at least since the Ordovician period, as shown by Maurits Lindström's findings in the 1970s, however recent work has shown a possible Cambrian origin. Biology Octocorals resemble the stony corals in general appearance and in the size of their polyps, but lack the distinctive stony skeleton. Also unlike the stony corals, each polyp has only eight tentacle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phylum
In biology, a phylum (; plural: phyla) is a level of classification or taxonomic rank below kingdom and above class. Traditionally, in botany the term division has been used instead of phylum, although the International Code of Nomenclature for algae, fungi, and plants accepts the terms as equivalent. Depending on definitions, the animal kingdom Animalia contains about 31 phyla, the plant kingdom Plantae contains about 14 phyla, and the fungus kingdom Fungi contains about 8 phyla. Current research in phylogenetics is uncovering the relationships between phyla, which are contained in larger clades, like Ecdysozoa and Embryophyta. General description The term phylum was coined in 1866 by Ernst Haeckel from the Greek (, "race, stock"), related to (, "tribe, clan"). Haeckel noted that species constantly evolved into new species that seemed to retain few consistent features among themselves and therefore few features that distinguished them as a group ("a self-contained unity" ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cnidaria
Cnidaria () is a phylum under kingdom Animalia containing over 11,000 species of aquatic animals found both in freshwater and marine environments, predominantly the latter. Their distinguishing feature is cnidocytes, specialized cells that they use mainly for capturing prey. Their bodies consist of mesoglea, a non-living jelly-like substance, sandwiched between two layers of epithelium that are mostly one cell thick. Cnidarians mostly have two basic body forms: swimming medusae and sessile polyps, both of which are radially symmetrical with mouths surrounded by tentacles that bear cnidocytes. Both forms have a single orifice and body cavity that are used for digestion and respiration. Many cnidarian species produce colonies that are single organisms composed of medusa-like or polyp-like zooids, or both (hence they are trimorphic). Cnidarians' activities are coordinated by a decentralized nerve net and simple receptors. Several free-swimming species of Cubozoa and Scyphozo ... [...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] |
