Cephalodiscus

	Cephalodiscus ''Cephalodiscus'' is a genus of hemichordates in the monotypic family Cephalodiscidae of the order Cephalodiscida. Description Unlike ''Rhabdopleura'', ''Cephalodiscus'' species do not form large colonies and are only pseudocolonial. ''Cephalodiscus'' zooids are also more mobile than their ''Rhabdopleura'' counterparts, and are able to move around within tubaria. ''Cephalodiscus'' zooids can be produced via asexual budding. There are a few pairs of tentacled arms, whereas ''Rhabdopleura'' has only one pair of arms. Species 19 living species of ''Cephalodiscus'' have been described: * ''Cephalodiscus agglutinans'' Harmer & Ridewood, 1914 * '' Cephalodiscus atlanticus'' Bayer, 1962 * '' Cephalodiscus australiensis'' Johnston & Muirhead, 1951 * ''Cephalodiscus calciformis'' Emig, 1977 * '' Cephalodiscus densus'' Andersson 1907 'Cephalodiscus rarus'' Andersson, 1907; ''Cephalodiscus anderssoni'' Gravier 1912* ''Cephalodiscus dodecalophus'' McIntosh 1882 * ''Cephalodiscus evans ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Cephalodiscus Planitectus ''Cephalodiscus planitectus'' is a sessile hemichordate belonging to the order Cephalodiscida. Distribution It is found at a depth of 100–300 metres off the island of Jōgashima, Sagami Bay, Japan. Anatomy There are three pairs of arms with tentacles. Phylogenetics ''Cephalodiscus planitectus'' is the most divergent of all ''Cephalodiscus'' species, with Miyamoto, Nishikawa and Namikawa (2020) suggesting that it constitutes a sister group In phylogenetics, a sister group or sister taxon, also called an adelphotaxon, comprises the closest relative(s) of another given unit in an evolutionary tree. Definition The expression is most easily illustrated by a cladogram: Taxon A and ... to all existing ''Cephalodiscus'' species. References planitectus Animals described in 2020 {{hemichordate-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Cephalodiscus Dodecalophus ''Cephalodiscus dodecalophus'' is a sessile Sessility, or sessile, may refer to: * Sessility (motility), organisms which are not able to move about * Sessility (botany), flowers or leaves that grow directly from the stem or peduncle of a plant * Sessility (medicine), tumors and polyps that ... hemichordate belonging to the order Cephalodiscida. It has erect tubaria. References dodecalophus {{hemichordate-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Pterobranchia Pterobranchia is a class of small worm-shaped animals. They belong to the Hemichordata, and live in secreted tubes on the ocean floor. Pterobranchia feed by filtering plankton out of the water with the help of cilia attached to tentacles. There are about 25 known living pterobranch species in three genera, which are '' Rhabdopleura'', ''Cephalodiscus'', and ''Atubaria''. On the other hand, there are several hundred extinct genera, some of which date from the Cambrian Period. The class Pterobranchia was established by Ray Lankester in 1877. It contained, at that time, the single genus '' Rhabdopleura''. ''Rhabdopleura'' was at first regarded as an aberrant polyzoon, but when the ''Challenger'' report on ''Cephalodiscus'' was published in 1887, it became clear that ''Cephalodiscus'', the second genus now included in the order, had affinities with the Enteropneusta. Electron microscope studies have suggested that pterobranchs belong to the same clade as the extinct gra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Cephalodiscus Nigrescens ''Cephalodiscus nigrescens'' is a sessile hemichordate belonging to the order Cephalodiscida. Parasites The parasitic protozoa Protozoa (singular: protozoan or protozoon; alternative plural: protozoans) are a group of single-celled eukaryotes, either free-living or parasitic, that feed on organic matter such as other microorganisms or organic tissues and debris. Histor ...n '' Neurosporidium cephalodisci'' has been found in the nervous system of ''Cephalodiscus nigrescens''.Maletz, Jörg. (2017) ''Graptolite Paleobiology''. Wiley-Blackwell. References nigrescens {{hemichordate-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Cephalodiscus Gilchristi ''Cephalodiscus gilchristi'' is a sessile hemichordate belonging to the order Cephalodiscida. It is found in South Africa in 1908. Parasites The parasitic copepod Copepods (; meaning "oar-feet") are a group of small crustaceans found in nearly every freshwater and saltwater habitat. Some species are planktonic (inhabiting sea waters), some are benthic (living on the ocean floor), a number of species have p ... '' Zanclopus cephalodisci'' has been found in the intestines of ''Cephalodiscus gilchristi''.Maletz, Jörg. (2017) ''Graptolite Paleobiology''. Wiley-Blackwell. References gilchristi {{hemichordate-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Cephalodiscus Calciformis ''Cephalodiscus calciformis'' is a sessile hemichordate belonging to the order Cephalodiscida. It is the only pterobranch species with funnel A funnel is a tube or pipe that is wide at the top and narrow at the bottom, used for guiding liquid or powder into a small opening. Funnels are usually made of stainless steel, aluminium, glass, or plastic. The material used in its construc ...-shaped tubaria. References calciformis {{hemichordate-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Cephalodiscus Kempi ''Cephalodiscus kempi'' is a sessile hemichordate belonging to the order Cephalodiscida. References kempi Jerreley Zanian John Slijger (born June 18, 1986), known by his stage name Kempi, is a Dutch rapper of Curaçaoan descent. From 2006 to 2012, Kempi was signed at Dutch label TopNotch. He released two studio albums, four EP's and seven mixtapes to ... {{hemichordate-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Cephalodiscus Hodgsoni ''Cephalodiscus hodgsoni'' is a sessile hemichordate belonging to the order Cephalodiscida Cephalodiscida is one of two orders in the class Pterobranchia, which are small, worm-shaped animals. Members belong to the hemichordates. Species in this order are sessile, living in clear water and secrete tubes on the ocean floor. Taxonomy Th .... References hodgsoni {{hemichordate-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Cephalodiscus Graptolitoides ''Cephalodiscus graptolitoides'' is a sessile hemichordate belonging to the order Cephalodiscida. It has encrusting tubaria ''Tubaria'' is a genus of fungi in the family Tubariaceae. The genus is widely distributed, especially in temperate regions. ''Tubaria'' was originally named as a subgenus of ''Agaricus'' by Worthington George Smith in 1870. Claude Casimir Gil .... References graptolitoides {{hemichordate-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Cephalodiscus Gracilis ''Cephalodiscus gracilis'' is a sessile hemichordate belonging to the order Cephalodiscida Cephalodiscida is one of two orders in the class Pterobranchia, which are small, worm-shaped animals. Members belong to the hemichordates. Species in this order are sessile, living in clear water and secrete tubes on the ocean floor. Taxonomy Th .... References gracilis {{hemichordate-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Cephalodiscus Evansi ''Cephalodiscus evansi'' is a sessile hemichordate belonging to the order Cephalodiscida Cephalodiscida is one of two orders in the class Pterobranchia, which are small, worm-shaped animals. Members belong to the hemichordates. Species in this order are sessile, living in clear water and secrete tubes on the ocean floor. Taxonomy Th .... References evansi {{hemichordate-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]