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What is the oldest known vertebrate?

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The Agnatha, or jawless fishes, are the oldest known vertebrates. The only surviving members of this class are the hagfish and lampreys , known as cyclostomes.

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Get more facts and information about Chordata . Or, view the full encyclopedia entry from The Columbia Encyclopedia, Sixth Edition.

Similar questions: What is the name of the oldest vertebrate? Are Agnatha fish and jawless fishes the same thing? What is the Agnatha fish? [ Hide these questions ]

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