. Bulletins of American paleontology. 202 Bulletin 357 1000- 800 CO O c CD CD _Q Z5 03 600- 400 200- O CO ® ® C3. Total Mollusks 0 50 100 150 200 250 Cumulative Number of Collections 1000- ® JD ^ 800 > 600-1 E O 400 200. 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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