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Mammal ancestors laid eggs, and this 250-million-year-old fossil finally proves it

Latest Science News -- ScienceDaily·Latest Science News -- ScienceDaily·about 2 months ago
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In the aftermath of Earth’s most catastrophic extinction event, one unlikely survivor rose to dominate a shattered world: Lystrosaurus. Now, a stunning fossil discovery—an ancient egg containing a curled-up embryo—has finally answered a decades-old…

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