Triceratium trisulcum var. cuneata from Oamaru, New Zealand. Single example on the slide. Prepared by RI Firth. Mounted in Styrax and dated February 1944. Olympus BHB microscope using 450nm LED light. 40x Leitz Pl Apo NA 1.00 objective, oil immersion. Olympus Aplanat Achromat condenser, oil immersion, brightfield lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 56 images stacked in Zerene (Pmax).