Agnatha

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Agnatha \Agnatha\ n.
     a class of eel-shaped chordates with a cartilaginous skeleton
     lacking jaws, scales, and pelvic fins. Among these are the
     lampreys and hagfishes. There are some extinct forms.
  
     Syn: class Agnatha.


          [WordNet 1.5]

From WordNet (r) 2.0 [wn]:

  Agnatha
       n : superclass of eel-shaped chordates lacking jaws and pelvic
           fins: lampreys; hagfishes; some extinct forms [syn: {superclass
           Agnatha}]