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Showing results for tags 'ridgely sandstone'.
I have some beautiful crinoid stem cross-section impressions from the Devonian Mahantango in PA (runs from NY to VA) and have been searching all morning to find a good reference book that won't cost me $100 just to open the cover and see if it's adequate to the task at hand. Winifred Goldring seems to have done the definitive works, but she didn't include any cross sections! Can anybody point me in the right direction?