(A, B) Orthonychia enorme Lindström (1884). (A) Paralectotype NRM 38223. (A1, A2) Right lateral and anterior oblique views; illustrated by Lindström (1884, pl. 2, figs 69, 70). (B) Paralectotype NRM 38222. Left lateral view; illustrated by Lindström (1884), pl. 2, fig. 68. (C) Orthonychia sp., PMU 21576. (C1) Detail of apex. (C2–C4) Right lateral, left lateral and posterior views. Specimen collected by Cleve and mentioned by Lindström (1884, p. 69). Scale bar: 0.5 cm (A, B, C2–C4).