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《新科学家》 2026年10月17日 · 中文解读

化石哺乳动物是最早的哺乳证据

Fossil mammal is earliest evidence of suckling · James Woodford
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这篇讲什么
美国芝加哥大学的罗哲西及其同事在中国内蒙古道虎沟地区发现了一种新的哺乳形动物属,命名为Megacauda sungei,生活在约1.63亿至1.68亿年前。这种半水生动物是已知最早能够通过吮吸进食的动物,其保存完好的3D骨盆和舌骨让研究团队首次重建了哺乳形动物的完整喉部解剖结构。研究者认为,吮吸等关键哺乳动物特征的出现早于现代哺乳动物的起源。
原文开头
A SEMI-AQUATIC forebear of all living mammals that lived between 163 million and 168 million years ago was the first known animal capable of feeding by suckling. Zhe-Xi Luo at the University of Chicago and his colleagues have discovered a new genus of mammaliform, a creature that lived before the last common ancestor of the living mammalian groups – placentals, marsupials and monotremes – that would have been able to chew and suck. Found in the Daohugou area of Inner Mongolia, China, it is also the earliest known example of a semi-aquatic mammal. The animal has been dubbed Megacauda sungei. “The back half of Megacauda is more similar to the platypus, of all mammals. …
摘自《新科学家》(New Scientist)2026年10月17日,James Woodford。仅引用开头一小段供了解文章,版权归原刊所有,全文请阅读原刊。
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