. Bulletin of the British Museum (Natural History), Geology. . Fig. 17. Litosphaeridium siphoniphorum (Cookson & Eisenack). A figure illustrating the variation in the size and shape of the processes (based on specimens from the Ceno- manian).. 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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