Figure 2; Hyperaulax ridleyi. A–E. Lectotype, NHMUK 1888.6.27.106. F–I. Paralectotypes #1 to #4 (in order), NHMUK 1888.6.27.107-110. J. Extreme form, large and with thick callus, NHMUK 1888.6.27.88-94. K. Weathered specimen, ZMS unnumbered (ex Heimburg colln.). L. Protoconch detail (same specimen from K).
Figure 4; Hyperaulax ramagei. A–C. Syntype of Bonnanius bouvieri, MNHN-IM-2000-28020 (MNHN). D. Reproduction of “Turbine #44” of Buonanni (1861), the holotype of Bonnanius bonnanius. E. Protoconch detail, NHMUK 1902.10.16.4.
Figure 3; Hyperaulax ramagei. A–E. Lectotype, NHMUK 1988.6.24.163. F–J. Paralectotypes #1 to #5 (in order), including large forms in apparent sub-fossil state, NHMUK 1988.6.24.164-170. K. Specimen without the white spiral bands, NHMUK 1902.10.16.4.