Stephanopyxis sp., Ray Parkinson

Stephanopyxis sp.
Palos Verdes strew, 10x Nikon Plan Apo NA 0.45 objective

I think is a Stephanopyxis sp. (maybe hyalomarginata) from a strew slide from Palos Verdes. Interesting view from beneath and at an angle, allows the spines to be seen clearly. Prepared by Ray Parkinson. Mounted in Naphrax and dated July 1979. Olympus BHB microscope using 450nm LED light. 40x Leitz Pl Apo NA 1.00 objective, oil immersion. Olympus Aplanat Achromat condenser, oil immersion, very oblique lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 37 images stacked in Zerene (Pmax).