noun
superclass of eel-shaped chordates lacking jaws and pelvic fins: lampreys; hagfishes; some extinct forms
• Syn: ↑superclass Agnatha
• Hypernyms: ↑class
• Member Holonyms: ↑Vertebrata, ↑subphylum Vertebrata, ↑Craniata, ↑subphylum Craniata
• Member Meronyms:
Useful english dictionary. 2012.