Coscinodiscus morenoensis from Moreno Y Canyon, California, USA. Single example on the slide. Cretaceous material. Prepared by ECP Bone. Olympus BHB microscope using 450nm LED light. 20x Nikon Plan Apo 0.65 objective. Olympus Aplanat Achromat condenser, oblique lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 34 images stacked in Zerene (Pmax).
Coscinodiscus morenoensis G.D.Hanna 1927. Published in: Hanna, G.D. (1927). Cretaceous diatoms from California. Occasional Papers of the California Academy of Sciences 13: 5-[49]. [in English]. Page 18, Plate 2, Figures 3,4. This name is currently regarded as a synonym of Azpeitiopsis morenoensis (G.D.Hanna) P.A.Sims.