Agnatha
ag·natha
noun
1.
superclass of eel-shaped chordates lacking jaws and pelvic fins: lampreys; hagfishes; some extinct forms
Origin
From Agnatha, from Ancient Greek ἀ- (a-, “without”) + γνάθος (gnáthos, “jaw”).
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Parts
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.