Ornithoscelida

1 definition found

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

  Ornithoscelida \Or*ni`tho*scel"i*da\, n. pl. [NL., fr. Gr.
     'o`rnis, 'o`rniqos, a bird + ? a leg.] (Zool.)
     A group of extinct Reptilia, intermediate in structure
     (especially with regard to the pelvis) between reptiles and
     birds. -- {Or`ni*tho*scel"i*dan}, a.
     [1913 Webster]