Aulacodiscus radiatus from Maryland. Rare fossil. Accepted name is Eupodiscus radiatus. Two examples on the slide. Prepared by AC Cole. Olympus BHB microscope using 450nm LED light. 20x Nikon Plan Apo NA 0.65 objective. Olympus Aplanat Achromat condenser, brightfield lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 23 images stacked in Zerene (Pmax).