66 million years ago, an asteroid caused 75% extinction. Uncover this history at Bisti/De-Na-Zin Wilderness, a fossil paradise in New Mexico. The asteroid's impact created a thin layer of iridium—an element rare on Earth but common in asteroids—in rock strata all over the world, marking the precise boundary of the extinction event for geologists. | Revealed
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66 million years ago, an asteroid caused 75% extinction. Uncover this history at Bisti/De-Na-Zin Wilderness, a fossil paradise in New Mexico. The asteroid's impact created a thin layer of iridium—an element rare on Earth but common in asteroids—in rock strata all over the world, marking the precise boundary of the extinction event for geologists. | Revealed
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