An example of Triceratium radiato-punctatum from St Laurent-La-Vernède, France. Single example, with the remains of a girdle band on top of it. Mounted in Styrax/Aroclor, and dated 23/8/[19]80. Col. R. Ross. Metal coverslip spacers. Prepared by Richard Gosden. Olympus BHB microscope using 450nm LED light. 40x Leitz Pl Apo NA 1.00 objective, oil immersion. Olympus Aplanat Achromat condenser, oil immersion, oblique lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 55 images stacked in Zerene (Pmax). Couldn’t get close enough to use the 63x Leitz, which is a shame.
Trigonium radiatopunctatum (Schmidt in Schmidt et al.) Hustedt in Schmidt et al., 1959. Schmidt’s. Schmidt’s atlas, Plate 94, Figure 14, and Plate 469, Figures 6-12 (as Triceratium (Trigonium) radiatopunctatum).