. Bulletin of the Geological Society of America. Geology. 962 GRABAU AND O CONNELL THE GRAPTOLITE SHALES. â % ^ 0^ =: 00 â¢i ^1 1? 1 â¢^ . ^ iiiit CO alt a^ â to 1 Mono CepJ Mon Diplo iplog %-> 'H «W , Cl O <(-i o o 'S O O tM > ^.laAopu^n .TQAVOq. 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 Geological Society of America. [New York : The Society]

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Keywords: ., bookcentury1800, bookdecade1890, booksubjectgeology, bookyear1890