Fern Frozen in Time by Volcanic Flow Reveals Stunning Detail | The Artful Amoeba, Scientific American Blog Network
blogs.scientificamerican.com/artful-amoeba/2014/10/30/fern-frozen-in-time-by-...
It defies belief, but a 180 million year old fern fossil unearthed in Sweden is so exquisitely preserved that it is possible to see its cells ...
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