Ichthyosauria

2 definitions found

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

  Ichthyosauria \Ich`thy*o*sau"ri*a\, n. pl. [NL. See
     {Ichthyosaurus}.] (Paleon.)
     An extinct order of marine reptiles, including Ichthyosaurus
     and allied forms; -- called also {Ichthyopterygia}. They have
     not been found later than the Cretaceous period.
     [1913 Webster]



From WordNet (r) 2.0 [wn]:

  Ichthyosauria
       n : extinct marine reptiles: ichthyosaurs [syn: {order
           Ichthyosauria}]