Cycloputeolina discoidea (Flint, 1899). Photomicrograph of early coil in specimen figured in Flint, 1899, Plate 49, fig. 2 (left image). Uncatalogued slide F-4446 in Cushman Collection of Foraminifera, National Museum of Natural History, Smithsonian Institution, Washington, DC.
""Watermelon forams"--These foraminiferans possess chlorophyte (green algal) endosymbionts which give to the living cell a characteristic "grass green" coloration (specimen on right). Under high light (high UV?) conditions, the symbionts produce carotenoid pigments (salmon pink specimen on left)."