An arrangement of four Coscinodiscus oblongus from Springfield, Barbados. Described as ‘rare’. Prepared by Thomas Edward Doeg. Quite a low contrast slide and the oblique lighting has certainly helped. 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. 30 images stacked in Zerene (Pmax).
Synonyms: Craspedodiscus oblongus, Craspedodiscus ellipticus.