Triceratium tripolare from Sendai, Japan. Single example on the slide. Prepared by JA Long. Reference to Schmidt’s Atlas, Plate 166, Figure 1. 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. 51 images stacked in Zerene (Pmax).