|
Burrowing Anemone
The burrowing anemone (''Ceriantheopsis austroafricanus'') is a species of tube-dwelling anemone in the family Cerianthidae Cerianthidae is a family of tube-dwelling anemones in the order Spirularia of the subclass Ceriantharia. Genera The World Register of Marine Species includes the following genera in the family: * ''Anthoactis'' Leloup, 1932 * ''Apiactis'' Bene ....Molodtsova T. N., Griffiths C. L., Acuna F.H. 2011. A new species of shallow-water cerianthid (Cnidaria: Anthozoa) from the South Africa, with remarks on the genus ''Ceriantheopsis''. ''Afr. Nat. Hist.'' 7: 1-8. Description The burrowing anemone grows up to 8 cm in diameter. It lives in a self-constructed wrinkled felt-like tube which may be buried quite deeply in the sand. Several rows of feeding tentacles emerge from the tube and may be salmon-coloured, brownish, creamy or purple. The outer tentacles are longer and used for food capture and defence. The inner tentacles are shorter and held more erect. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. 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. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists 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. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tube-dwelling Anemone
Tube-dwelling anemones or ceriantharians look very similar to sea anemones but belong to an entirely different class of anthozoans. They are solitary, living buried in soft sediments. Tube anemones live inside and can withdraw into tubes, which are composed of a fibrous material made from secreted mucus and threads of nematocyst-like organelles known as ptychocysts. Within the tubes of these ceriantharians, more than one polyp is present, which is an exceptional trait because species that create tube systems usually contain only one polyp per tube. Ceriantharians were formerly classified in the taxon Ceriantipatharia along with the black corals but have since been moved to their own subclass, Ceriantharia. Ceriantharians have a crown of tentacles that are composed of two whorls of distinctly different sized tentacles. The outer whorl consists of large tentacles that extend outwards. These tentacles taper to points and are mostly used in food capture and defence. The smaller inn ... [...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] |
Cerianthidae
Cerianthidae is a family of tube-dwelling anemones in the order Spirularia of the subclass Ceriantharia. Genera The World Register of Marine Species includes the following genera in the family: * ''Anthoactis'' Leloup, 1932 * ''Apiactis'' Beneden, 1897 * ''Bursanthus'' Leloup, 1968 * ''Ceriantheomorphe'' Carlgren, 1931 * ''Ceriantheopsis'' Carlgren, 1912 * ''Cerianthus'' Delle Chiaje, 1830 * ''Engodactylactis ''Engodactylactis'' is a genus of 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 f ...'' Leloup, 1942 * '' Isodactylactis'' Carlgren, 1924 * '' Nautanthus'' Leloup, 1964 * '' Pachycerianthus'' Roule, 1904 * '' Paradactylactis'' Carlgren, 1924 * '' Parovactis'' Leloup, 1964 * '' Peponactis'' Van Beneden, 1897 * '' Plesiodactylactis'' Leloup, 1942 * '' Sacculactis'' Leloup, 1964 * '' Solasteractis'' Van Beneden, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
