Fossils in Paleozoic Chert Millstones. (IMAGE)

American Geosciences Institute

Fossils in Paleozoic Chert Millstones.

Caption

This is a close-up of millstone at Black Hand Gorge, showing fusulinids in various views, scale bar 3 mm.

Credit

J.T. Hannibal et al.; SEPM (The Society for Sedimentary Geology)

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