. Fossil plants : for students of botany and geology . Paleobotany. XXXIX] PTEROPHYLLUM 557 forms and a specimen from the Wealden of Germany included by Schenk in P. Dunkerianum^ should probably be included in this. 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 Seward, A. C. (Albert Charles), 1863-1941. Cambridge : University Press

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Keywords: ., bookcentury1800, bookdecade1890, bookpublishercambr, bookyear1898