Class Chondrichthyes

Class Chondrichthyes is a class of Phylum Chordata, Subphylum Vertebrata. The organisms of Class Chondrichthyes have skeletons that are made of cartilage as opposed to bone. The organism of Class Chondrichthyes are marine organisms. An example of an organism classified under Class Chondrichthyes is Negaprion brevirostris.
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Embryonic stage of Negaprion brevirostris