Species not formally described.
[Only scales observed.] Body scales of 2 types: large plate scales, elliptical, 1.3 × 1.9 µm, with a delicate raised margin, proximal surface with a 0.18 µm wide rim and c. 140–150 fine striae, distal surface with a fibrous pattern; small plate scales elliptical, 0.7 × 1 µm, one surface with c. 60 fine radiating striae.
Southern Ocean, south of Australia, 45.38–57.31°S 77.35–144.20°E.
The scales are similar to those of C. chiton, except that in type B the rims of the larger scales are not striated, as they are in C. chiton.
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.