Domain Eucaryota Subdomain Chlorota Doweld (2001) Kingdom Bacillariobiota Doweld (2001) Subkingdom Bacillariobiotina Doweld (2001) Phylum Chrysomonadophyta Pascher (1931) 1 Class Chrysomonadophyceae Pascher ex Schoenichen (1925) 2 Class Phaeothamniophyceae R.A. Andersen & J.C. Bailey (1998)