. Bulletin of the British Museum (Natural History), Geology. 21. Figs 14-18 Coryphidium bohemicum Vavrdova 1972. All Pontyfenni Formation; x 1200. Fig. 14, MPK 4876, sample MPA 20100; slide 1, W64/2. Fig. 15, MPK 4877, sample MPA 20102; slide 1, Q66/0. Fig. 16, MPK 4878, sample MPA 20102; slide 1, X74/4. Fig. 17, MPK 4879, sample MPA 20102; slide 1, M52/0. Fig. 18, MPK 4880, sample MPA 20092; slide 1, Q62/4. Fig. 19 ICoryphidium minutum Cramer & Diez 1976; MPK 4881, sample MPA 20074, Allt Cystanog Member; slide 1, J49/3, x 1200. Fig. 20 Coryphidium bohemicum? Vavrdova 1972; MPK 4882, sampl
. Bulletin of the British Museum (Natural History), Geology. 21. Figs 14-18 Coryphidium bohemicum Vavrdova 1972. All Pontyfenni Formation; x 1200. Fig. 14, MPK 4876, sample MPA 20100; slide 1, W64/2. Fig. 15, MPK 4877, sample MPA 20102; slide 1, Q66/0. Fig. 16, MPK 4878, sample MPA 20102; slide 1, X74/4. Fig. 17, MPK 4879, sample MPA 20102; slide 1, M52/0. Fig. 18, MPK 4880, sample MPA 20092; slide 1, Q62/4. Fig. 19 ICoryphidium minutum Cramer & Diez 1976; MPK 4881, sample MPA 20074, Allt Cystanog Member; slide 1, J49/3, x 1200. Fig. 20 Coryphidium bohemicum? Vavrdova 1972; MPK 4882, sample MPA 20093, Pontyfenni Forma- tion; slide l,P30/0, x 1200. Fig. 21 Coryphidium? sp. A; MPK 4883, sample MPA 20087, Cwmffrwd Member; slide 1, H37/0, x 1200. See Fig. 22. Description. The vesicle is quadrate with straight sides and broadly rounded corners. The vesicle wall is apparently smooth. The processes, which are concentrated at the corners of the vesicle, are stout and have elaborate distal terminations that bifurcate to the second order. The terminal branches of the processes may be capitate. Sixteen processes are present. Excystment may be by means of a straight split that occurs along one side of the 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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