Ornithoscelida
Pronunciation : Or*ni`tho*scel"i*da
Part of Speech : n.
Etymology : [NL., fr. Gr. (Zo?l.)
Definition : Defn: 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.
pl.
Source : Webster's Unabridged Dictionary, 1913