ornithopus

from The Century Dictionary.

• noun A genus of gigantic animals, formerly supposed to be birds, now believed to be dinosaurian reptiles, known by their footprints in the Triassic formation of the Connecticut valley.
• noun A genus of plants (Linnæus, 1737) of the order Leguminosæ, the tribe Hedysareæ, and the subtribe Coronilleæ, known by the obtuse keel.