. Bulletin of the British Museum (Natural History), Geology. . m Fig. 56 Pricyclopyge binodosa eurycephala subsp. nov. Upper Arenig, Fennian. a, b, cranidium and left cheek in dorsal and anterior views, Pontyfenni Formation, B. rushtoni Biozone, loc. 23, x 4, ; c, small axial shield showing cranidial sculpture, horizon and locality as Fig. 56a, x 3-5, It. 15928; d, large flattened cranidium and front part of thorax, the former showing the glabellar tubercle, horizon and locality as Fig. 56a, x 4, It. 18519; e, moult arrangement of axial shield, specimen showing exceptional subparallel
. Bulletin of the British Museum (Natural History), Geology. . m Fig. 56 Pricyclopyge binodosa eurycephala subsp. nov. Upper Arenig, Fennian. a, b, cranidium and left cheek in dorsal and anterior views, Pontyfenni Formation, B. rushtoni Biozone, loc. 23, x 4, ; c, small axial shield showing cranidial sculpture, horizon and locality as Fig. 56a, x 3-5, It. 15928; d, large flattened cranidium and front part of thorax, the former showing the glabellar tubercle, horizon and locality as Fig. 56a, x 4, It. 18519; e, moult arrangement of axial shield, specimen showing exceptional subparallel posterior part of glabella, horizon and locality as Fig. 56a, x 3-5, ; f, g, internal mould of pygidium in full relief, dorsal and posterior views, strati- graphically earliest example, S. abyfrons Biozone, Cwmfelin Boeth Formation, Geological Survey locality Carm. 37SW EA14, lane SW of Pass-by, x 6, BGS TCC959; h, axial shield, horizon and locality as Fig. 56a, x 4, It. 15916; j, widest cranidium, horizon and locality as Fig. 56a, x 4, NMW ; k, stratigraphically early cranidium with very posterior maximum width of median cephalic lobe (crinkle cleavage does not distort the proportions), S. abyfrons Biozone, loc. 38, x 4, 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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