Girty, G.H., 1900: Devonian fossils from Southwestern Colorado: the fauna of the Ouray Limestone. Ann. Rep. U.S. Geol. Surv., 20(2):

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Girty, G.H., 1900

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Devonian fossils from Southwestern Colorado: the fauna of the Ouray Limestone. Ann. Rep. U.S. Geol. Surv., 20(2): by Girty, G.H., 1900 listed for sale on Bibliophile Bookbase. Click here for full details and on-line purchase.