mononychus_olecranus | ||
1. | [ noun ] (zoology) 75-million-year-old turkey-sized long-legged fossil found in the Gobi Desert of Mongolia having birdlike fused wrist bones and keeled breastbone and a long tail resembling a dinosaur's; classification as bird or dinosaur is in dispute | |
Related terms: | maniraptor genus_Mononychus | |