. The Carboniferous ammonoids of America. Ammonoidea; Paleontology. U. S. GEOLOGICAL SURVEY MONOGRAPH XLII PL. X »â >â «>*< ^ V. 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 Smith, James Perrin, 1864-1931. Washington, Govt. print. off.

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectpaleontology, bookyea