Three examples of Triceratium arcticum from the New Hebrides (Vanuatu, Pacific Ocean). Mounted in Hyrax. Yellowed mountant with some issues. Broken pieces of coverslip used as spacers. Prepared by Flatters and Garnett Ltd. Olympus BHB microscope using 450nm LED light. As well as the arrangement I imaged one of them using the 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. 44 images stacked in Zerene (Pmax).
Triceratium arcticum Brightwell 1853. Published in: Brightwell, T. (1853). On the genus Triceratium, with descriptions and figures of the species. Quarterly Journal of Microscopical Science, London 1: 245-252, pl. IV. Page 250, Plate IV [4], Figure 11.