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Chondrichthyes

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http://journals.plos.org/plosone/browse/chondrichthyes

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Chondrichthyes

10.280.10.70.30.30^Chondrichthyes

Chondrichthyes (/kɒnˈdrɪkθᵻ.iːz/; from Greek χονδρ- chondr- 'cartilage', ἰχθύς ichthys 'fish') is a class that contains the cartilaginous fishes: they are jawed vertebrates with paired fins, paired nares, scales, a heart with its chambers in series, and skeletons made of cartilage rather than bone. The class is divided into two subclasses: Elasmobranchii (sharks, rays, skates, and sawfish) and Holocephali (chimaeras, sometimes called ghost sharks, which are sometimes separated into their own class) https://en.wikipedia.org/wiki/Chondrichthyes RD

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Accepted

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