Chromadorea

	Chromadorea The Chromadorea are a class of the roundworm phylum, Nematoda. They contain a single subclass (Chromadoria) and several orders. With such a redundant arrangement, the Chromadoria are liable to be divided if the orders are found to form several clades, or abandoned if they are found to constitute a single radiation. Formerly, they were treated as a subclass in the paraphyletic " Adenophorea" assemblage, which has been mostly abandoned by modern authors. It is also suspected that the Chromadorea may not be monophyletic as delimited here; at least the Monhysterida seem to be a distinct and far more ancient lineage than the rest. Members of this class' bodies usually have annules, their amphids elaborate and spiral, and they all have three esophageal glands. They usually live in marine sediments, although they can live elsewhere. They have a more sophisticated pharynx The pharynx (: pharynges) is the part of the throat behind the human mouth, mouth and nasal cavity, and above ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Nematode The nematodes ( or ; ; ), roundworms or eelworms constitute the phylum Nematoda. Species in the phylum inhabit a broad range of environments. Most species are free-living, feeding on microorganisms, but many are parasitic. Parasitic worms (helminths) are the cause of soil-transmitted helminthiases. They are classified along with arthropods, tardigrades and other moulting animals in the clade Ecdysozoa. Unlike the flatworms, nematodes have a tubular digestive system, with openings at both ends. Like tardigrades, they have a reduced number of Hox genes, but their sister phylum Nematomorpha has kept the ancestral protostome Hox genotype, which shows that the reduction has occurred within the nematode phylum. Nematode species can be difficult to distinguish from one another. Consequently, estimates of the number of nematode species are uncertain. A 2013 survey of animal biodiversity suggested there are over 25,000. Estimates of the total number of extant species are su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Benthimermithida Benthimermithida is an order of nematodes belonging to the class Chromadorea The Chromadorea are a class of the roundworm phylum, Nematoda. They contain a single subclass (Chromadoria) and several orders. With such a redundant arrangement, the Chromadoria are liable to be divided if the orders are found to form several c .... Families: * Benthimermithidae Petter, 1980 References Chromadorea Nematode orders {{Nematode-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Desmoscolecida Desmoscolecida is an order of marine nematodes. It has just one suborder, Desmoscolecina, which itself has one superfamily, Desmoscolecoidea. In a worm of this order, the body tapers towards each end and is marked by a number of well-defined ridges. Their number varies in the different species. The head bears four movable setae, and some of the ridges bear a pair either dorsally or ventrally. Two pigment spots between the fourth and fifth ridges are regarded as eyes. The Desmoscolecida move by looping their bodies like geometrid caterpillars or leeches, as well as by creeping on their setae. The mouth is terminal, and leads into a muscular oesophagus which opens into a straight intestine terminating in an anus, which is said to be dorsal in position. The sexes are distinct. The testis is single, and its duct opens into the intestine and is provided with two chitinous spicules. The ovary is also single, opening independently and anterior to the anus. The nervous system is as yet un ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Monhysterida The Monhysterida are an order in the phylum Nematoda. Usually the stoma In botany, a stoma (: stomata, from Greek language, Greek ''στόμα'', "mouth"), also called a stomate (: stomates), is a pore found in the Epidermis (botany), epidermis of leaves, stems, and other organs, that controls the rate of gas exc ... in Monhysterida is funnel shaped and lightly cuticularized, but it is sometimes spacious and heavily cuticularized and they always have protrusible teeth. They are either simply spiral or circular. This worm is marine. References External links accessscience* Parasitic nematodes Chromadorea Nematode orders {{parasitic animal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Desmodorida Desmodorida is an order of nematodes belonging to the class Chromadorea. Families: * Ceramonematidae * Choniolaimidae * Chromadoridae * Comesomatidae * Cyatholaimidae * Desmodoridae * Draconematidae * Epsilonematidae * Etmolaimidae * Microlaimidae * Monoposthiidae * Richtersiidae Richtersiidae is a family of tardigrade Tardigrades (), known colloquially as water bears or moss piglets, are a phylum of eight-legged segmented micro-animals. They were first described by the German zoologist Johann August Ephraim Go ... * Selachinematidae * Spiriniidae * Xennellidae References {{Authority control Nematode orders Chromadorea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Chromadorida Chromadorida is an order of nematodes belonging to the class Chromadorea The Chromadorea are a class of the roundworm phylum, Nematoda. They contain a single subclass (Chromadoria) and several orders. With such a redundant arrangement, the Chromadoria are liable to be divided if the orders are found to form several c .... Families: * Achromadoridae Gerlach & Riemann, 1973 * Chromadoridae Filipjev, 1917 * Cyatholaimidae Filipjev, 1918 * Ethmolaimidae Lorenzen, 1981 * Neotonchidae Lorenzen, 1981 References {{Authority control Chromadorea Nematode orders ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Tree Of Life Web Project The Tree of Life Web Project (ToL) is an Internet project providing information about the diversity and phylogeny of life on Earth. This collaborative peer reviewed project began in 1995, and is written by biologists from around the world. The site has not been updated since 2011, however the pages are still accessible. The pages are linked hierarchically, in the form of the branching evolutionary tree of life, organized cladistically. Each page contains information about one particular group of organisms and is organized according to a branched tree-like form, thus showing hypothetical relationships between different groups of organisms. In 2009 the project ran into funding problems from the University of Arizona. Pages and Treehouses submitted took a considerably longer time to be approved as they were being reviewed by a small group of volunteers, and apparently, around 2011, all activities ended. History The idea of this project started in the late 1980s. David Maddison ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Rhabditida Rhabditida is an order of free-living, parasitic and microbivorous nematodes living in soil. The Cephalobidae, Panagrolaimidae, Steinernematidae, and Strongyloididae seem to be closer to the Tylenchia, regardless of whether these are merged with the Rhabditia or not.Tree of Life Web Project (2002b)Nematoda Version of 2002-JAN-01. Retrieved 2008-NOV-02. Families Rhabditida * Myolaimina ''Incertae sedis'' * Myolaimoidea **** Myolaimidae * Rhabditina Bunonematomorpha * Bunonematoidea ** Bunonematidae Diplogasteromorpha * Cylindrocorporoidea Cylindrocorporidae * Diplogasteroidea **Cephalobiidae Diplogasteridae Diplogasteroididae Rhabditomorpha * Mesorhabditoidea Peloderidae * Rhabditoidea **** Rhabditidae Spirurina * Ascaridomorpha * Ascaridoidea Acanthocheilidae Anisakidae Ascarididae Heterocheilidae Raphidascarididae * Cosmocercoidea ** Atractidae Kathlaniidae * Seuratoidea **** Cucullanidae * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Ascaridida Ascaridomorpha is an infraorder of parasitic roundworms in the order Rhabditida Rhabditida is an order of free-living, parasitic and microbivorous nematodes living in soil. The Cephalobidae, Panagrolaimidae, Steinernematidae, and Strongyloididae seem to be closer to the Tylenchia, regardless of whether these are merg .... References Nematode orders {{parasitic animal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]