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Cognettia
''Cognettia'' is a genus of annelids belonging to the family Enchytraeidae. The genus has almost cosmopolitan distribution In biogeography, a cosmopolitan distribution is the range of a taxon that extends across most or all of the surface of the Earth, in appropriate habitats; most cosmopolitan species are known to be highly adaptable to a range of climatic and en .... Species: * '' Cognettia alsoae'' (Martinsson, Klinth & Erséus, 2018) * '' Cognettia baekrokdamensis'' (Dózsa-Farkas, Felföldi, Nagy & Hong, 2018) References {{Taxonbar, from=Q5139819 Annelids ...
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Cognettia Baekrokdamensis
''Cognettia'' is a genus of annelids belonging to the family Enchytraeidae. The genus has almost cosmopolitan distribution. Species: * ''Cognettia alsoae ''Cognettia'' is a genus of annelids belonging to the family Enchytraeidae. The genus has almost cosmopolitan distribution In biogeography, a cosmopolitan distribution is the range of a taxon that extends across most or all of the surface ...'' (Martinsson, Klinth & Erséus, 2018) * '' Cognettia baekrokdamensis'' (Dózsa-Farkas, Felföldi, Nagy & Hong, 2018) References {{Taxonbar, from=Q5139819 Annelids ...
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Enchytraeidae
Enchytraeidae is a family of microdrile oligochaeta, oligochaetes. They resemble small earthworms and include both terrestrial species known as potworms that live in highly organic Ecoregion#Terrestrial, terrestrial environments, as well as some that are Marine (ocean), marine. The peculiar genus ''Mesenchytraeus'' is known as "ice worms", as they spend the majority of their lives within glaciers, only rising to the surface at certain points in the summer. Enchytraeidae also includes the Grindal worm (''Enchytraeus buchholzi''), which is commercially bred as aquarium fish food. Selected genera Enchytraeidae genera include: * ''Achaeta (annelid), Achaeta'' František Vejdovsky, Vejdovský, 1878 * ''Archienchytraeus'' Eisen, 1878 (''nomen dubium'') * ''Buchholzia (annelid), Buchholzia'' Michaelsen, 1886 * ''Cernosvitoviella'' Nielsen & Christensen, 1959 * ''Christensenidrilus'' Dózsa-Farkas & Convey, 1998 (= ''Christensenia'' Dózsa-Farkas & Convey, 1997 (''non'' Brinck 1945: Chris ...
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Annelids
The annelids (), also known as the segmented worms, are animals that comprise the phylum Annelida (; ). The phylum contains over 22,000 extant species, including ragworms, earthworms, and leeches. The species exist in and have adapted to various ecologies – some in marine environments as distinct as tidal zones and hydrothermal vents, others in fresh water, and yet others in moist terrestrial environments. The annelids are bilaterally symmetrical, triploblastic, coelomate, invertebrate organisms. They also have parapodia for locomotion. Most textbooks still use the traditional division into polychaetes (almost all marine), oligochaetes (which include earthworms) and leech-like species. Cladistic research since 1997 has radically changed this scheme, viewing leeches as a sub-group of oligochaetes and oligochaetes as a sub-group of polychaetes. In addition, the Pogonophora, Echiura and Sipuncula, previously regarded as separate phyla, are now regarded as sub-group ...
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Cosmopolitan Distribution
In biogeography, a cosmopolitan distribution is the range of a taxon that extends across most or all of the surface of the Earth, in appropriate habitats; most cosmopolitan species are known to be highly adaptable to a range of climatic and environmental conditions, though this is not always so. Killer whales ( orcas) are among the most well-known cosmopolitan species on the planet, as they maintain several different resident and transient (migratory) populations in every major oceanic body on Earth, from the Arctic Circle to Antarctica and every coastal and open-water region in-between. Such a taxon (usually a species) is said to have a ''cosmopolitan'' distribution, or exhibit cosmopolitanism, as a species; another example, the rock dove (commonly referred to as a ' pigeon'), in addition to having been bred domestically for centuries, now occurs in most urban areas around the world. The extreme opposite of a cosmopolitan species is an endemic (native) species, or one foun ...
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