A close-up view of a portion of the slab after preparation

A World-Class Crinoid Fossil Assemblage

This slab is covered with complete and nearly complete specimens of one species of crinoid, Glyptocrinus decadactylus, and is one of the largest and most spectacular examples of fossil crinoid preservation ever found in the Cincinnatian Series (Late Ordovician Period, 450 million years ago).

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