. Bulletins of American paleontology. Permian Brachiopods and Molluscs: Yancey 263 / Sillstortfls with 1 subordinote sholes ? / ond carbonates 0 o ' â â. UPPER WOLFCAMPiAN LOWER LEONAROIAN. 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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