The Graptolite Summit Graptolite Locality

Looking northwestward from the fossil graptolite locality in the Middle to Upper Ordovician Vinini Formation near Graptolite Summit, Nevada. The pastel-colored to black shaley siltstones which sandwhich a prominent bed of whitish-brown quartzite (a knob of the quartzite is visible at the extreme upper right) near Graptolite Summit furnish paleontology enthusiasts with loads of fascinating graptolite remains, an extinct variety of hemichordate that reached its zenith of adaptation in the Ordovician Period.

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