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1000万年前的蛇有后肢和一个失落的骨头，改变了演化史
近1000万年前，蛇并不是我们今天所熟知的灵活、无肢的动物，它们还保留着后肢，并且有一个几乎在现代物种中消失的下颚骨。阿根廷的Najash rionegrina化石重新塑造了科学家对蛇起源的看法，表明早期蛇是大型、宽口的捕食者，而不是小型的穴…
来源: ScienceDaily ｜ 阅读全文
发布时间: 2026-04-24 14:59 GMT+8（北京时间）
#Najashrionegrina #蛇 #化石 #演化 #古生物学
ScienceDaily This 100 million-year-old snake had hind legs and a lost bone that changes evolution Nearly 100 million years ago, snakes weren’t the sleek, limbless creatures we know today—they still had hind legs and even a cheekbone that has almost vanished in modern species. A remarkably preserved fossil of Najash rionegrina from Argentina has reshaped…
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