An arrangement of Rutilaria radiata in different aspects. No coverslip ring, and there are ‘issues’, including bits of the coverslip missing around the edge. Yellowed mountant. No makers name or location. Olympus BHB microscope using 450nm LED light. 40x Leitz Pl Apo NA 1.00 objective, oil immersion. Olympus Aplanat Achromat condenser, oil immersion, oblique lighting. 2.5x Nikon CF PL photoeyepiece. 11mm removed from the tube to the camera to increase the field of view. Monochrome converted Nikon d850 camera. 80 images 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.