Species not formally described.
[Only one cell observed.] Cell body 2.8 µm diameter. Body scales of 1 type: short spine scales elliptical to circular, 0.2 × 0.3 µm; distal surface with very faint striae; spine supported by 3 ridges (the shadow casting preparation often makes it resemble a cross or the numeral ‘4’); spine 0.15–0.2 µm long.
Southern Ocean, offshore Prydz Bay, East Antarctica, 64°14.4’S 79°07.8’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.