Ornithoscelida Or*ni`tho*scel"i*da, n. pl. [NL., fr. Gr. 'o`rnis, 'o`rniqos, a bird + ? a leg.] (Zo["o]l.) 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]

The Collaborative International Dictionary of English. 2000.

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