Cocconeis formosa. Single example on the slide. No details on location, mountant or date. Prepared by ECP Bone. 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. 29 image stacked in Zerene (Pmax).
Cocconeis formosa Brun 1891. Published in: Brun, J.-J. (1891). Diatomées espèces nouvelles marines, fossiles ou pélagiques. Mémoires de la Société de Physique et d’Histoire Naturelle de Genève 31 (part 2, no. 1): 1-47, pls 11-22. Page 16, Plate 18, Figure 6.