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Definition of Term

(English) A subgroup of cartilaginous fishes; usually large, fast swimming, fish-shaped predators. The modern sharks are classified in the Selachii, together with the skates and rays they form the Neoselachii, together with a number of fossil groups, the Elasmobranchii, and together with chimaeras, the Chondrichthyes that gather all the cartilaginous fishes. (See also: cartilaginous fishes, cartilage, chimaeras)
(French) Un sous-groupe de poissons cartilagineux; habituellement grands, à nage rapide, à la forme type de poissons prédateurs. Les requins modernes sont classés dans les Selachii, avec les raies ils forment les Neoselachii, avec un certain nombre de groupes fossiles, les Elasmobranchii, et avec Chimères, les Chondrichthyes qui comprennent donc tous les poissons cartilagineux. (See also: cartilaginous fishes, cartilage, chimaeras)
(Portuguese) TO BE CORRECTED [Subgrupo de peixes cartilaginosos; normalmente predadores grandes e rápidos juntamente com as raias e as mantas formam a classe Selachii ou Elasmobranchii.] (See also: cartilaginous fishes, cartilage, chimaeras)

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