Rutilaria radiata shown as a side view. Some issues with the mountant. No location given Unknown maker. 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. 37 images stacked in Zerene (Pmax).
Rutilaria radiata Grove & Sturt, 1886. Original description: Grove, E. & Sturt, G. (1886). On a fossil marine diatomaceous deposit from Oamaru, Otago, New Zealand. Part I. Journal of the Quekett Microscopical Club, Series 2, 2(16): 321-330, pls 18-19. Page 323, Plate 18, Figures 4,5.
I recently acquired about 30 more slides by this maker to add to the ones I already had, so if you want to see others by them, search for AAAAA in the Search option at the top of the page, and I’ll include this in each of the pages for them.