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1 Q.J.G.S., vol. liii, pl. xxvii, figs. 14–17, 1897Google Scholar.
2 Type, British Museum, L 22528.
3 Mantell, G. A., Foss. S. Downs, pl. xxvii, fig. 9, and pl. xxviii, fig. 3, 1822Google Scholar; and Dixon, F., Geology of Sussex, pl. xxviii, fig. 29, 1850Google Scholar.
4 Type in Dr. A. W. Eowe's collection, from Sewerby (Yorkshire).