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微小恐龙腕骨重塑鸟类飞行起源
近日,耶鲁大学与石溪大学的古生物学家合作,通过对来自蒙古戈壁地区晚白垩世(约6600万至1亿年前)两种鸟型恐龙化石的研究,发现了一块关键的腕骨,其演化过程对鸟类飞行的稳定性发挥了至关重要的作用。研究团队对一个名为Citipati(希迪派梯)的恐龙标本 ...
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