Ictodosaur

2 definitions found

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

  ictodosaur \ictodosaur\ n.
     An extinct reptile intermediate in form between the
     therapsids and most primitive true mammals.
     [WordNet 1.5]

From WordNet (r) 2.0 [wn]:



  ictodosaur
       n : intermediate in form between the therapsids and most
           primitive true mammals