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Unformatted text preview: Class Chondrichthyes Includes sharks, rays, and ratfishes Sharks are streamlined and swift swimmers Rays are dorsovetrally flattened Ray-Finned Fishes and Lobe-Fins Most vertebrates belong to a clade called Osteichthyes o Including ourselves Most have bony endoskeleton Aquatic Osteichtyans o Vertebrates we call fishes o Have a swim bladder for buoyancy control Lobe Fins...
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- Spring '08