Species not formally described.
Cell body spherical, 2.3–4.6 µm diameter. Body scales of 1 type: plate scales elliptical, 0.6 × 0.8 µm, distal surface possibly concave, with c. 16 rather coarse radiating striae and a thickened margin.
Southern Ocean, south of Australia, 54.02–57.31°S 120.04–128.17°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.