Hidden for 95 million years beneath layers of sediment, the remarkablywell-preserved skull of an ancient legged snake species — Najash rionegrina — has now revealed a chapter of evolutionary history ...

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Snakes may have wandered about on legs for 70 million years before becoming the slithering serpents we see today. Our understanding of how snakes evolved their long, legless bodies and highly mobile ...

Snake evolution has intrigued scientists for years because they knew that these complex vertebrates once had limbs and adapted over time to live without them in dramatic fashion. But a limited fossil ...