Glorioptychus callidus from Dosados Canyon, California, Nodule 1. Single example on the slide. Marine fossil. Mounted in Darax and dated 15-08-(20)24. Prepared by Michel Haak. Olympus BHB microscope using 450nm LED light. 63x Leitz Pl Apo 1.4 objective, oil immersion. Olympus Aplanat Achromat condenser, oil immersion, oblique lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 61 images stacked in Zerene (Pmax).
Glorioptychus callidus Hanna 1927. Published in: Hanna, G.D. (1927). Cretaceous diatoms from California. Occasional Papers of the California Academy of Sciences 13: 5-[49]. Page 20, Plate 2, Figures 7,8.
A beautiful example of one of the more striking diatoms.