. Bulletin of the British Museum (Natural History), Geology. 196 R. A. FORTEY & R. M. OWENS. Fig. 67 Illaenopsis harrisoni (Postlethwaite & Goodchild 1886). Upper Arenig, Fennian, B. rushtoni Biozone, Pontyfenni Formation, a, axial shield with damaged axial area, loc. 23, x 1-5, It. 19681; b, large pygidium showing sculpture, loc. 24, x 1, GSM Pr620; c, free cheek and doublure, loc. 24, note how fine lines on cheek turn into base of ocular region, x 3, It. 19682; d, incomplete large thorax and pygidium, showing wide pleurae, loc. 24, x 1, ; e, cast from incomplete hypostoma, lo
. Bulletin of the British Museum (Natural History), Geology. 196 R. A. FORTEY & R. M. OWENS. Fig. 67 Illaenopsis harrisoni (Postlethwaite & Goodchild 1886). Upper Arenig, Fennian, B. rushtoni Biozone, Pontyfenni Formation, a, axial shield with damaged axial area, loc. 23, x 1-5, It. 19681; b, large pygidium showing sculpture, loc. 24, x 1, GSM Pr620; c, free cheek and doublure, loc. 24, note how fine lines on cheek turn into base of ocular region, x 3, It. 19682; d, incomplete large thorax and pygidium, showing wide pleurae, loc. 24, x 1, ; e, cast from incomplete hypostoma, loc. 24, x 2, It. 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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