Final answer:
Jawless fish, like hagfish and lampreys, are classified under Agnatha, lacking jaws and representing primitive fish species.
Explanation:
Jawless fish belong to the superclass Agnatha and include species like hagfish and lampreys. They lack jaws, distinguishing them from other fish classes like Chondrichthyes and Osteichthyes. These jawless fish are considered primitive in the evolutionary history of fishes.
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