Archaeornithes

2 definitions found

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

  Archaeornithes \Archaeornithes\ n.
     1. 1 a subclass of primitive reptilelike fossil birds of the
        Jurassic or early Cretaceous.
  
     Syn: subclass Archaeornithes
          [WordNet 1.5]



From WordNet (r) 2.0 [wn]:

  Archaeornithes
       n : primitive reptile-like fossil birds of the Jurassic or early
           Cretaceous [syn: {subclass Archaeornithes}]