A strew slide from Maryland, USA. Wide range of species present. Prepared by Samuel Henry Meakin. Mounted in styrax.
I chosen one to image, which I’m fairly sure is a Paralia sulcata. 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. 22 images stacked in Zerene (Pmax).