. The Cyathaspididae; a family of Silurian and Devonian jawless vertebrates. Cyathaspididae. 358 FIELDIANA: GEOLOGY, VOLUME 13. Fig. 110. Cyathaspis banksi (from Kiaer, 1932); specimens in collection of Geological Survey of Great Britain (X about 3). A, dorsal shield; B, ventral shield. orb, orbit. in Archegonaspis ludensis but this is apparently in error; the speci- men to which he refers (Brit. Mus. P. 3241) is Cyathaspis banksi. Kiaer (1932, p. 22) stated that Cyathaspis had a "real dorsal spine" comparable to that of Pteraspis, but judging from his own figure (op. cit, pi. 8, fig
. The Cyathaspididae; a family of Silurian and Devonian jawless vertebrates. Cyathaspididae. 358 FIELDIANA: GEOLOGY, VOLUME 13. Fig. 110. Cyathaspis banksi (from Kiaer, 1932); specimens in collection of Geological Survey of Great Britain (X about 3). A, dorsal shield; B, ventral shield. orb, orbit. in Archegonaspis ludensis but this is apparently in error; the speci- men to which he refers (Brit. Mus. P. 3241) is Cyathaspis banksi. Kiaer (1932, p. 22) stated that Cyathaspis had a "real dorsal spine" comparable to that of Pteraspis, but judging from his own figure (op. cit, pi. 8, fig. 2), and according to Lankester (1868, p. 26), this is not a distinct element, but only a crest on the central epitegum. Cyathaspis banksi (Huxley and Salter). Figures 100,A, 110. Pteraspis banksii Huxley and Salter, 1856, Quart. Jour. Geol. Soc. London, 12, p. 100, pi. 2, fig. 2a-d; Huxley, 1858, Quart. Jour. Geol. Soc. London, 14, pp. 274-277, pi. 15; von Alth, 1886, Beitr. Pal. Geol. , 5, Heft 3, p. 64. Pteraspis truncatus Huxley and Salter, 1856, Quart. Jour. Geol. Soc. London, 12, p. 100, pi. 2, fig. la-d; Salter, 1859, Ann, Mag. Nat. Hist., (3), 4, pp. 45-47, fig. 2. Cyathaspis banksii Lankester, 1865, Rept. Brit. Assoc. Adv. Sci., 1864, Not. and Abstr., p. 58; 1868, Fishes Old Red Sandstone, Mon. Pal. Soc, pp. 26-27, pi. 2, figs. 9-11, pi. 4, fig. 6. Scaphaspis truncatus Lankester, 1865, Rept. Brit. Assoc. Adv. Sci., 1864, Not. and Abstr., p. 58; 1868, Fishes Old Red Sandstone, Mon. Pal. Soc, pp. 24- 25, pi. 2, figs. 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 Denison, Robert H. (Robert Howland), 1911-1985; Chicago Natural History Museum. Chicago : Chicago Natural History Museum Press
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