chromalveolates see Supergroup Chromalveolata Adl et al., 2005 Kingdom Chromista Caval.-Sm. (1981) - chromists Subkingdom Chromobiota Caval.-Sm. (1991) Infrakingdom Heterokonta Caval.-Sm. (1986) - heterokonts see Superphylum Heterokonta Caval.-Sm. (1986) Phylum Ochrophyta Caval.-Sm. (1995) Subphylum Phaeista Caval.-Sm. (1995) Infraphylum Chrysista Caval.-Sm. (1993) Class Chrysophyceae Fritsch (1927) Genus Spumella Cienk. (1870)