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Montana Fossilized Ammonite

Currency:USD Category:Collectibles Start Price:25.00 USD Estimated At:100.00 - 300.00 USD
Montana Fossilized Ammonite
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For your consideration is a fossilized Ammonite from Big Horn county Montana. This fossil was removed from the Bear Paw shale which is a geologic formation from the Late Cretaceous period. The earliest ammonites appear during the Devonian, and the last species died out in the Cretaceous–Paleogene extinction event. This piece is a wonderful example of the species. You can see the planispirals present in the fossil. The fossil measures 10 1/2" x 5 3/4" x 9".