On-Site At The Prida Formation Fossil Locality, Nevada

A paleontology enthusiast digs into typical black, ammonoid-bearing exposures of the Middle Triassic Prida Formation in Nevada. Often, a single hand-sized block of Prida limestone can hold over a dozen well-preserved ammonoids, which happily crack completely free of the limestones with a gentle tapping of the extremely dense, compacted calcium carbonate matrix with a geology rock hammer.

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