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Miners Looking for Ammonite Stumble on Rare Complete Fossils of 'Ocean Predators' From 100 Million Years Ago
Miners Looking for Ammonite Stumble on Rare Complete Fossils of 'Ocean Predators' From 100 Million Years Ago Evidence of ...
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This 71-Million-Year-Old Ammonite Is Also A Rare And Iridescent Gemstone
The “gem” of an ammonite dates back 71 million years, and comes with a curious coating of ammolite, giving it a dazzling rainbow iridescence. “A 'Gem' Ammonite in Matrix from the Bearpaw ...