Triceratium sendaiense from Sendai, Japan. Single example on the slide. Some yellowing of the mountant. Prepared by William Allott Firth. 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 camera to increase the field of view. Monochrome converted Nikon d850 camera. 89 images stacked in Zerene (Pmax).
Triceratium sendaiense A.W.F.Schmidt 1891. Published in: Schmidt, A.[W.F.] (1891). Atlas der Diatomaceen-kunde. Series V: Heft [41/42]. pp. pls 161-168. Leipzig: Fues’s Verlag (R. Reisland). Plate 165, Figure 1 (as ‘Sendaïense‘).