Triceratium megastomum. 2 examples on the slide. No location given. No makers label, but style looks similar to Watson and Sons. Slide says “Shows dots in the hexagons”. Olympus BHB microscope using 450nm LED light. 40x Leitz Pl Apo NA 1.00 objective, oil immersion. Olympus Aplanat Achromat condenser, oil immersion, brightfield. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 31 images stacked in Zerene (Pmax). Also shown is an inverted image of the stack which highlights the dots in the hexagons.