Agnatha

Từ điển WordNet v3.1 - WordNet Dictionary

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:
jawless vertebrate, jawless fish, agnathan, Ostracodermi, order Ostracodermi,
Anaspida, order Anaspida, Conodonta, order Conodonta, Conodontophorida, order Conodontophorida,
Cyclostomata, order Cyclostomata