An arrangement of three Coscinodiscus radiatus (and a sponge spicule). Some yellowing of the mountant, and it is quite foggy. Prepared by Flatters and Garnett Ltd. Olympus BHB microscope using 450nm LED light. 20x Nikon Plan Apo NA 0.65 objective. Olympus Aplanat Achromat condenser, oblique lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 22 images stacked in Zerene (Pmax).
Coscinodiscus radiatus Ehrenberg 1840. Published in: Ehrenberg, C.G. (1840). Über noch zahlreich jetzt lebende Thierarten der Kreidebildung und den Organismus der Polythalamien Preprint of Abhandlung der Könglichen Akademie der Wissenschaften zu Berlin aus dem Jahre 1839 [1841] with different pagination. pp. 1-94, 4 pls. Berlin. Page 68, Plate 3, Figures 1a-c. Heterotypic synonyms; Coscinodiscus radiatus var. media Grunow 1884, Coscinodiscus radiatus var. genuinus A.Cleve 1942.