Note 181 — Chapter VIII · TRILOBITA
Reading edition
M‘Coy, Synop. Sil. Foss. Ireland, 1846, p. 56, and Brit. Pal. Foss., 1851, p. 146, pl. 1 E, fig. 16; Salter, Quart. Journ. Geol. Soc. iii., 1847, p. 251.
Reading edition
M‘Coy, Synop. Sil. Foss. Ireland, 1846, p. 56, and Brit. Pal. Foss., 1851, p. 146, pl. 1 E, fig. 16; Salter, Quart. Journ. Geol. Soc. iii., 1847, p. 251.