Species not formally described.
[Only scales observed.] Body scales of 1 type: spine scales with a base-plate circular to elliptical, 2–2.4 µm diameter; proximal surface with fine striae; spine supported by 4 arched struts; overall length of spine and struts 0.5 µm.
Southern Ocean, south of Australia, 46.20–49.47°S 85.17–101.18°E.
Chrysochromulina genus description: Cells have homodynamic flagella and a coiling haptonema, and electron microscopy is usually required to identify the species. As well as being photosynthetic, these fragile haptophytes ingest picoplanktonic and nanoplanktonic organisms by phagocytosis.