. Bulletin of the British Museum (Natural History), Geology. 332 S. G. MOLYNEUX. Fig. 44 IFrankea hamata Burmann 1970; MPK 4887, sample MPA 20102, Pontyfenni Formation; slide 1, R54/3, x 1200. Figs 45—47 Micrhystridium aff. acuminosum Cramer & Diez 1977; sample MPA 20074, Allt Cystanog Member; x 1200. Fig. 45, MPK 4888; slide 2, H70/2. See Fig. 70. Fig. 46, MPK 4889; slide 1, S53/3. Fig. 47, MPK 4890; slide 1, H71/0. Figs 48-50 Micrhystridium cf. inconspicuum aremoricanum Paris & Deunff 1970; x 1200. Fig. 48, MPK 4891, sample MPA 20103, Cwm yr Abbey Member; slide 2, L57/3. Fig. 49, MPK
. Bulletin of the British Museum (Natural History), Geology. 332 S. G. MOLYNEUX. Fig. 44 IFrankea hamata Burmann 1970; MPK 4887, sample MPA 20102, Pontyfenni Formation; slide 1, R54/3, x 1200. Figs 45—47 Micrhystridium aff. acuminosum Cramer & Diez 1977; sample MPA 20074, Allt Cystanog Member; x 1200. Fig. 45, MPK 4888; slide 2, H70/2. See Fig. 70. Fig. 46, MPK 4889; slide 1, S53/3. Fig. 47, MPK 4890; slide 1, H71/0. Figs 48-50 Micrhystridium cf. inconspicuum aremoricanum Paris & Deunff 1970; x 1200. Fig. 48, MPK 4891, sample MPA 20103, Cwm yr Abbey Member; slide 2, L57/3. Fig. 49, MPK 4892, sample MPA 20103, Cwm yr Abbey Member; slide 2, D74/2. Fig. 50, MPK 4893, sample MPA 20104, Afon Ffinnant Formation; slide 2, L51/2. See Fig. 74. Figs 51-53 Micrhystridium aff. henryi Paris & Deunff 1970; sample MPA 20103, Cwm yr Abbey Member; x 1200. Fig. 51, MPK 4894; slide 2, H74/2. Fig. 52, MPK 4895; slide 2, V70/1. See Fig. 73. Fig. 53, MPK 4896; slide 2, R53/1. Dimensions. Vesicle diameter range 10-22/mi, mean 18/mi; process length 3/mi. Remarks. The processes on each of the three specimens resemble those of Micrhystridium acuminosum and suggest an affinity with that species, although M. acuminosum has a larger vesicle and longer, stouter 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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