. Bulletin of the British Museum (Natural History), Geology. COLONIAL PHILLIPSASTRAEIDAE FROM DEVON 70 60 50 40 30 â 20 10. 1 05 145 1-85 2-25 Qt (0-2 mm class intervals) 2-65 14 n 12 10. 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 British Museum (Natural History). London : BM(NH)

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