. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. GOIN AND AUFFENBERG: FOSSIL SIRENIDAE 507 posterior margin. Neural spine well developed, but dorsal margin 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum

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Keywords: ., bookauthorharvarduniversity, bookcentury1900, booksubjectzoology