An arrangement of three Aulaocodiscus orientalis mounted in Hyrax. Prepared by Watson and Sons Ltd. Olympus BHB microscope using 450nm LED light. Arrangement was imaged using a 20x Nikon Plan Apo NA 0.65 objective. The larger one in the middle was imaged using a 40x Leitz Pl Apo NA 1.00 objective, oil immersion. Olympus Aplanat Achromat condenser, oblique lighting. 2.5x Nikon CF PL photoeyepiece. 11mm spacer to the camera removed to increase field of view. Monochrome converted Nikon d850 camera. 52 images stacked in Zerene (Pmax). There are 26 processes on this one.
Aulacodiscus orientalis Greville 1864. Published in: Greville, R.K. (1864). Descriptions of new and rare Diatoms. Series XI. Transactions of the Microscopical Society, New Series, London 12: 8-14, pls I, II. Page 12, Plate 2, Figure 6.