化石显示早期爬行动物使用肋骨肌肉有效呼吸. Fossil reveals early reptiles used rib muscles to breathe efficiently.

俄克拉荷马州的一种28.9亿年前的化爬行动物化石提供了最早的直接证据, A 289-million-year-old mummified reptile fossil from Oklahoma provides the earliest direct evidence of rib-powered breathing in vertebrates. 这一发现揭示了类小生物的复杂胸部组合,表明早期羊卵动物使用肋骨肌肉来通风肺. The discovery reveals a complex chest assembly in a small lizard-like creature, showing that early amniotes used rib muscles to ventilate their lungs. 这种适应使得呼吸更有效, 很可能有助于爬行动物,鸟类和哺乳动物的进化成功. This adaptation enabled more efficient respiration and likely contributed to the evolutionary success of reptiles, birds, and mammals.