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Thesaurus: ornithoscelida

A group of extinct Reptilia, intermediate in structure (especially with regard to the pelvis) between reptiles and birds.

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  1. n. pl. A group of extinct Reptilia, intermediate in structure (especially with regard to the pelvis) between reptiles and birds.
  2. 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.
  3. 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.