Anthodiscus floreatus from Oamaru, New Zealand. Three examples in a linear arrangement on the slide (shown using a 20x Nikon Plan Apo NA 0.65 objective). Main imaging is of the diatom on the right hand side of the arrangement. Prepared by Samuel Meakin. Mounted in Styrax and dated August 1943. Olympus BHB microscope using 450nm LED light. 63x Leitz Pl Apo NA 1.40 objective, oil immersion. Olympus Aplanat Achromat condenser, oil immersion, oblique lighting. 2.5x Nikon CF PL photoeyepiece. Monochrone converted Nikon d850 camera. 24 images stacked in Zerene (Pmax).