Sharks and rays are examples of what kind of fishes, members of the class chondrichthyes?

Sharks and rays are examples of members of cartilaginous class of fish of the class Chondrichthyes

Chondrichthyes is a class of fish which is composed of cartilaginous fishes. Their characteristics are: paired nares, scales, skeletons made of cartilage rather than bone, jawed vertebrates with paired fins and hearts in a series of chambers.

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