. Cave vertebrates of America; a study in degenerative evolution. Cave animals; Heteropygii. Fig. 70. Diagram of Ashton. Hypothetical Outline of Cave before Fall of Right Part of Roof is indicated by Dotted 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 Eigenmann, Carl H. , 1863-1927. Washington, D. C. , Carnegie Institution of Washington

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