An arrangement of three Coscinodiscus spiniferus from Cave valley, Oamaru, New Zealand. Currently accepted name is Coscinodiscus elegans var. spinifera. Prepared by WA Firth. Olympus BHB microscope using 450nm LED light. 63x Leitz Pl Apo NA 1.40 objective, oil immersion. Olympus Aplanat Achromat condenser, oil immersion, brightfield lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 22 images stacked in Zerene (Pmax).