Cyartonematidae
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Cyartonematidae
Cyartonematidae is a family of nematodes belonging to the order Desmoscolecida Desmoscolecida is an order of marine nematodes. 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 .... Genera: * '' Cyartonema'' Cobb, 1920 * '' Cyartonemoides'' Thanh & Gagarin, 2011 * '' Paraterschellingia'' Kreis, 1935 References {{Taxonbar, from=Q60409930 Nematodes ...
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Cyartonema
''Cyartonema'' is a genus of nematodes in the order Monhysterida The Monhysterida are an order in the phylum Nematoda The nematodes ( or grc-gre, Νηματώδη; la, Nematoda) or roundworms constitute the phylum Nematoda (also called Nemathelminthes), with plant-parasitic nematodes also known as eel .... References External links * WoRMS Chromadorea genera {{Chromadorea-stub ...
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Desmoscolecida
Desmoscolecida is an order of marine nematodes. 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 unknown. Genera include '' Desmoscolex'', '' Greeffiella'', and '' Tricoma''. References ...
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Paraterschellingia
''Paraterschellingia'' is a genus of nematodes belonging to the family Cyartonematidae Cyartonematidae is a family of nematodes belonging to the order Desmoscolecida Desmoscolecida is an order of marine nematodes. In a worm of this order, the body tapers towards each end and is marked by a number of well-defined ridges. Their num .... The species of this genus are found in Antarctica. Species: *'' Paraterschellingia brevicaudata'' *'' Paraterschellingia fusiformis'' *'' Paraterschellingia fusuformis'' References {{Taxonbar, from=Q10619805 Nematodes ...
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Nematodes
The nematodes ( or grc-gre, Νηματώδη; la, Nematoda) or roundworms constitute the phylum Nematoda (also called Nemathelminthes), with plant-parasitic nematodes also known as eelworms. They are a diverse animal phylum inhabiting a broad range of environments. Less formally, they are categorized as Helminths, but are taxonomically classified along with arthropods, tardigrades and other moulting animals in the clade Ecdysozoa, and unlike flatworms, have tubular digestive systems 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 described to date vary by author and may change rapidly over time. A 2013 survey of animal biodiversity published in the mega jo ...
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