An arrangement of three Auliscus spinosus from an Artesian Well, Atlantic City, New Jersey. Fossil marine material, mounted in Styrax and dated October 1977. Prepared by H Adler. Three examples on the slide. The one on the right is showing the underside of the diatom, while the other two show the top side. Olympus BHB microscope using 450nm LED light. Arrangement imaged with a 40x Leitz Pl Apo NA 1.00 objective, oil immersion (43 images stacked in Zerene using Pmax). Main image shows the central diatom rotated by 90 degrees. 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. 57 images stacked in Zerene (Pmax).
Published in: Rattray, J. (1888). A revision of the genus Auliscus Ehrenberg and of some allied genera. Journal of the Royal Microscopical Society 1888: 861-920, 5 pls [XII-XVI]. Also known as Pseudauliscus spinosus (Th.Christian) Rattray 1888.