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Sabellastarte Pectoralis
''Sabellastarte'' is a genus of marine polychaete worms in the Family (biology), family Sabellidae. Species The following species are classified in this genus: *''Sabellastarte australiensis'' *''Sabellastarte fallax'' *''Sabellastarte japonica'' *''Sabellastarte magnifica'' *''Sabellastarte pectoralis'' *''Sabellastarte samoensis'' *''Sabellastarte sanctijosephi'' *''Sabellastarte spectabilis'' References Sabellida Polychaete genera Taxa named by Henrik Nikolai Krøyer {{annelid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sabellastarte Spectabilis
''Sabellastarte'' is a genus of marine polychaete worms in the family Sabellidae. Species The following species 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. It is the basic unit of Taxonomy (biology), ... are classified in this genus: *'' Sabellastarte australiensis'' *'' Sabellastarte fallax'' *'' Sabellastarte japonica'' *'' Sabellastarte magnifica'' *'' Sabellastarte pectoralis'' *'' Sabellastarte samoensis'' *'' Sabellastarte sanctijosephi'' *'' Sabellastarte spectabilis'' References Sabellida Polychaete genera Taxa named by Henrik Nikolai Krøyer {{annelid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henrik Nikolai Krøyer
Henrik Nikolai Krøyer (22 March 1799 – 14 November 1870) was a Danish zoologist. Born in Copenhagen, he was a brother of the composer Hans Ernst Krøyer. He started studying medicine at the University of Copenhagen in 1817, which he later changed to history and philology. While a student, he was a supporter of the Philhellenic movement, and he participated as a volunteer in the Greek War of Independence along with several fellow students. Upon his return to Denmark, Krøyer gained an interest in zoology. In 1827, he took the position as assistant teacher in Stavanger, where he met, and later married, Bertha Cecilie Gjesdal. Bertha's sister, Ellen Cecilie Gjesdal, was deemed unfit to bring up her child, so Henrik and Bertha adopted the boy, who took on the name Peder Severin Krøyer, and later became a well-known painter. Krøyer returned to Copenhagen in 1830 where he was employed as a teacher in natural history at the Military Academy. As the course lacked a textbook, Krà ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. 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 of an ancestral taxon are grouped together (i.e. Phylogeneti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polychaete
Polychaeta () is a paraphyletic class of generally marine Annelid, annelid worms, common name, commonly called bristle worms or polychaetes (). Each body segment has a pair of fleshy protrusions called parapodia that bear many bristles, called chaetae, which are made of chitin. More than 10,000 species are described in this class. Common representatives include the lugworm (''Arenicola marina'') and the Alitta virens, sandworm or Alitta succinea, clam worm ''Alitta''. Polychaetes as a class are robust and widespread, with species that live in the coldest ocean temperatures of the abyssal plain, to forms which tolerate the extremely high temperatures near hydrothermal vents. Polychaetes occur throughout the Earth's oceans at all depths, from forms that live as plankton near the surface, to a 2- to 3-cm specimen (still unclassified) observed by the robot ocean probe Nereus (underwater vehicle), ''Nereus'' at the bottom of the Challenger Deep, the deepest known spot in the Earth's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family (, : ) 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". The delineation of what constitutes a family—or whether a described family should be acknowledged—is established and decided upon by active taxonomists. There are not strict regulations for outlining or acknowledging a family, yet in the realm of plants, these classifications often rely on both the vegetative and reproductive characteristics of plant species. Taxonomists frequently hold varying perspectives on these descriptions, leading to a lack of widespread consensus within the scientific community ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sabellidae
Sabellidae, or feather duster worms, are a family of marine polychaete tube worms characterized by protruding feathery branchiae. Sabellids build tubes out of a tough, parchment-like exudate, strengthened with sand and bits of shell. Unlike the other sabellids, the genus '' Glomerula'' secretes a tube of calcium carbonate instead. Sabellidae can be found in subtidal habitats around the world. Their oldest fossils are known from the Early Jurassic. Characteristics Feather-duster worms have a crown of feeding appendages or radioles in two fan-shaped clusters projecting from their tubes when under water. Each radiole has paired side branches making a two-edged comb for filter feeding. Most species have a narrow collar below the head. The body segments are smooth and lack parapodia. The usually eight thoracic segments bear capillaries dorsally and hooked chaetae (bristles) ventrally. The abdominal segments are similar, but with the position of the capillaries and chaetae reversed. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
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. It is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), morphology, behaviour, or ecological niche. In addition, palaeontologists 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. About 14% of these had been described by 2011. All species (except viruses) are given a binomial nomenclature, two-part name, a "binomen". The first part of a binomen is the name of a genus to which the species belongs. The second part is called the specific name (zoology), specific name or the specific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sabellastarte Australiensis
''Sabellastarte'' is a genus of marine polychaete worms in the family Sabellidae. Species The following species are classified in this genus: *'' Sabellastarte australiensis'' *'' Sabellastarte fallax'' *'' Sabellastarte japonica'' *'' Sabellastarte magnifica'' *''Sabellastarte pectoralis'' *'' Sabellastarte samoensis'' *'' Sabellastarte sanctijosephi'' *''Sabellastarte spectabilis ''Sabellastarte'' is a genus of marine polychaete worms in the family Sabellidae. Species The following species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating ...'' References Sabellida Polychaete genera Taxa named by Henrik Nikolai Krøyer {{annelid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sabellastarte Fallax
''Sabellastarte'' is a genus of marine polychaete worms in the family Sabellidae. Species The following species 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. It is the basic unit of Taxonomy (biology), ... are classified in this genus: *'' Sabellastarte australiensis'' *'' Sabellastarte fallax'' *'' Sabellastarte japonica'' *'' Sabellastarte magnifica'' *'' Sabellastarte pectoralis'' *'' Sabellastarte samoensis'' *'' Sabellastarte sanctijosephi'' *'' Sabellastarte spectabilis'' References Sabellida Polychaete genera Taxa named by Henrik Nikolai Krøyer {{annelid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sabellastarte Japonica
''Sabellastarte'' is a genus of marine polychaete worms in the family Sabellidae. Species The following species are classified in this genus: *''Sabellastarte australiensis'' *''Sabellastarte fallax'' *'' Sabellastarte japonica'' *'' Sabellastarte magnifica'' *''Sabellastarte pectoralis'' *'' Sabellastarte samoensis'' *'' Sabellastarte sanctijosephi'' *''Sabellastarte spectabilis ''Sabellastarte'' is a genus of marine polychaete worms in the family Sabellidae. Species The following species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating ...'' References Sabellida Polychaete genera Taxa named by Henrik Nikolai Krøyer {{annelid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sabellastarte Pectoralis
''Sabellastarte'' is a genus of marine polychaete worms in the Family (biology), family Sabellidae. Species The following species are classified in this genus: *''Sabellastarte australiensis'' *''Sabellastarte fallax'' *''Sabellastarte japonica'' *''Sabellastarte magnifica'' *''Sabellastarte pectoralis'' *''Sabellastarte samoensis'' *''Sabellastarte sanctijosephi'' *''Sabellastarte spectabilis'' References Sabellida Polychaete genera Taxa named by Henrik Nikolai Krøyer {{annelid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
