An eel-shaped vertebrate without jaws or paired appendages; a member of the Agnatha. The group includes the cyclostomes and some extinct forms.
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Words linked to "Agnathan" : superclass Agnatha, aquatic vertebrate, heterostracan, anaspid, jawless vertebrate, lamper eel, slime eels, lamprey eel, conodont, lamprey, jawless fish, cephalaspid |
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