01718808-n
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| 於 戈壁 及 蒙古 发现 的 长尾 鸟 化石, 於戈壁及蒙古发现的长尾鸟化石, 鹰嘴单爪龙, 鹰嘴 单 爪 龙 |
| Mononychus olecranus |
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a turkey-sized long-legged fossil 75 million years old found in the Gobi Desert having bird-like fused wrist bones and keeled breastbone and a long tail resembling a dinosaur's; short forelimbs end in a single claw instead of wings; a turkey-sized long-legged fossil 75 million years old found in the Gobi Desert having bird-like fused wrist bones and keeled breastbone and a long tail resembling a dinosaur's; short forelimbs end in a single claw instead of wings; classification as bird or dinosaur is in dispute ❲Mononychus olecranus❳ |