Aulacodiscus allorgei from Kamischev, Russia. Also has a second name (Aulacodiscus habirshawii) which has been crossed out. Prepared by JA Long, and mounted in Styrax. 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. 101 images stacked in Pmax (Zerene).
Aulacodiscus habirshawii Pantocsek 1886: 58; pl. 29, fig. 296. Published in: Pantocsek, J. (1886). Beiträge zur Kenntnis der Fossilen Bacillarien Ungarns. I. Theil Marine Bacillarien. pp. 1-74, 30 pls. Nagy-Tapolcsány: Buchdrucherei von Julius Platzko. Also described in Barker and Meakin 1947, J. Quekett Micro. Club, Ser. 4, 2(4): 175, pl. 24, Fig 2. QH 201 Q4.