. Bulletin - New York State Museum. Science. Fig. 19 Spirifex' eriensis var. Fig. 20 Spirifer corallinensis, pedicle valve. 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 New York State Museum; New York State Museum. Albany : New York State Education Dept

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Keywords: ., bookcentury1800, bookdecade1880, booksubjectscience, bookyear1887