Cognettia Clarae
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Cognettia Clarae
''Cognettia'' is a genus of annelids belonging to the family Enchytraeidae. The genus has almost cosmopolitan distribution. Species: * ''Cognettia alsoae'' (Martinsson, Klinth & Erséus, 2018) * ''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 ...'' (Dózsa-Farkas, Felföldi, Nagy & Hong, 2018) References {{Taxonbar, from=Q5139819 Annelids ...
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Annelids
The annelids (Annelida , from Latin ', "little ring"), also known as the segmented worms, are a large phylum, with 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-groups of polychae ...
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Enchytraeidae
Enchytraeidae is a family of microdrile oligochaetes. They resemble small earthworms and include both terrestrial species known as potworms that live in highly organic terrestrial environments, as well as some that are marine. The peculiar genus ''Mesenchytraeus'' is known as "ice worms", as they live in glaciers and will die if exposed to temperatures a few degrees above freezing. Apart from these, the best-known species is probably the Grindal Worm (''Enchytraeus buchholzi''), which is commercially bred as aquarium fish food. Selected genera Enchytraeidae genera include:WoRMS (2010) * ''Achaeta'' Vejdovský, 1878 * '' Archienchytraeus'' Eisen, 1878 ('' nomen dubium'') * ''Cernosvitoviella'' Nielsen & Christensen, 1959 * '' Christensenidrilus'' Dózsa-Farkas & Convey, 1998 (= ''Christensenia'' Dózsa-Farkas & Convey, 1997 (''non'' Brinck 1945: preoccupied)) * ''Cognettia'' Nielsen & Christensen, 1959 * '' Enchytraeina'' Bülow, 1957 * ''Enchytraeus'' * '' Epitelphusa'' Drago, ...
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Cosmopolitan Distribution
In biogeography, cosmopolitan distribution is the term for the range of a taxon that extends across all or most of the world in appropriate habitats. Such a taxon, usually a species, is said to exhibit cosmopolitanism or cosmopolitism. The extreme opposite of a cosmopolitan species is an endemic one, being found only in a single geographical location. Qualification The caveat “in appropriate habitat” is used to qualify the term "cosmopolitan distribution", excluding in most instances polar regions, extreme altitudes, oceans, deserts, or small, isolated islands. For example, the housefly is highly cosmopolitan, yet is neither oceanic nor polar in its distribution. Related terms and concepts The term pandemism also is in use, but not all authors are consistent in the sense in which they use the term; some speak of pandemism mainly in referring to diseases and pandemics, and some as a term intermediate between endemism and cosmopolitanism, in effect regarding pandemism as ...
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Cognettia Alsoae
''Cognettia'' is a genus of annelids belonging to the family Enchytraeidae. The genus has almost cosmopolitan distribution In biogeography, cosmopolitan distribution is the term for the range of a taxon that extends across all or most of the world in appropriate habitats. Such a taxon, usually a species, is said to exhibit cosmopolitanism or cosmopolitism. The ext .... 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, cosmopolitan distribution is the term for the range of a taxon that extends across all or most of th ...'' (Martinsson, Klinth & Erséus, 2018) * '' Cognettia baekrokdamensis'' (Dózsa-Farkas, Felföldi, Nagy & Hong, 2018) References {{Taxonbar, from=Q5139819 Annelids ...
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