. Bulletins of American paleontology. . Fig. 12. The rock section exposed along the Allegany River from Tidioute to Oil City, Pennsylvania. The upper diagram is from Charles Butts (1906). The lovi^er represents the present Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Paleontological Research Institution (Ithaca, N. Y. ); Columbia University. Ithaca, N. Y. , Paleontological Research Institution [etc. ]

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Keywords: ., bookauthorpaleonto, bookcentury1800, bookdecade1890, bookyear1895