After Young et al. 2003. Coccosphere dimorphic, broad, tapering rather abruptly at ends with only a few elongate liths. Terminal liths have one end extended into spine. Bars not very regular and often merge into continuous sheet. Liths 2-4 μm long, spines up to 25 μm, coccospheres up to 30 μm.
Tropical, sub-tropical, transitional (between sub-tropical and sub-antarctic) (Findlay & Giraudeau, 2000)