Species not formally described.
[Only one cell observed.] Cell body ovoid, 2.4 µm long, 1.7 µm diameter. Flagella equal, to 4.2 µm long; haptonema c. 10 µm long. Body scales of 1 type: plate scales subcircular, 0.8–0.9 µm diameter; one surface with c. 30 radiating striae, each distinctly bifurcated near the scale margin; other surface patternless.
Southern Ocean, south of Australia.
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.