An example of a Glyphodiscus sp. from Division Hill, Oamaru, New Zealand. I think this is probably Glyphodiscus strigillatus although I will leave that with a question mark after it for now. Prepared by Richard Gosden. Mounted in Naphrax and dated November 1965. 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. Monochrome converted Nikon d850 camera. 13 images stacked in Zerene (Pmax).