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Armandia (polychaete)
''Armandia'' is a genus of polychaetes belonging to the family Opheliidae. The genus has 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: *''Armandia agilis'' *''Armandia amakusaensis'' *''Armandia andamana'' *''Armandia bifida'' *''Armandia bilobata'' *''Armandia bipapillata'' *''Armandia brevis'' *''Armandia broomensis'' *''Armandia buccina'' *''Armandia casuarina'' *''Armandia circumpapillata'' *''Armandia cirrhosa'' *''Armandia dolio'' *''Armandia exigua'' *''Armandia filibranchia'' *''Armandia garretti'' *''Armandia hossfeldi'' *''Armandia ilhabelae'' *''Armandia intermedia'' *''Armandia laminosa'' *''Armandia lanceolata'' *''Armandia leptocirris'' *''Armandia loboi'' *''Armandia maculata'' *''Armandia mariacapae'' ...
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Polychaetes
Polychaeta () is a paraphyletic class of generally marine annelid worms, commonly called bristle worms or polychaetes (). Each body segment has a pair of fleshy protrusions called parapodia that bear many bristles, called chaetae, which are made of chitin. More than 10,000 species are described in this class. Common representatives include the lugworm (''Arenicola marina'') and the sandworm or clam worm ''Alitta''. Polychaetes as a class are robust and widespread, with species that live in the coldest ocean temperatures of the abyssal plain, to forms which tolerate the extremely high temperatures near hydrothermal vents. Polychaetes occur throughout the Earth's oceans at all depths, from forms that live as plankton near the surface, to a 2- to 3-cm specimen (still unclassified) observed by the robot ocean probe ''Nereus'' at the bottom of the Challenger Deep, the deepest known spot in the Earth's oceans. Only 168 species (less than 2% of all polychaetes) are known from fresh ...
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Opheliidae
Opheliidae is a family of small, annelid worms. Some of the genera, like Armandia, Ophelina and Polyophthalmus, have lost their circular muscles. The family consist of the following genera: *'' Ammotrypanella'' *'' Antiobactrum'' *'' Armandia'' *'' Dindymenides'' *'' Euzonus'' *'' Kesun'' *'' Lobochesis'' *''Ophelia Ophelia () is a character in William Shakespeare's drama '' Hamlet'' (1599–1601). She is a young noblewoman of Denmark, the daughter of Polonius, sister of Laertes and potential wife of Prince Hamlet, who, due to Hamlet's actions, ends u ...'' *'' Ophelina'' *'' Polyophthalmus'' *'' Pygophelia'' *'' Tachytrypane'' *'' Thoracophelia'' *'' Travisia'' References Polychaetes Annelid families {{annelid-stub ...
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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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