Phylum Heterokonta Caval.-Sm. (1986) see Superphylum Heterokonta Caval.-Sm. (1986) Subphylum Ochrista Caval.-Sm. (1986), orth. inval. see Phylum Ochrista Caval.-Sm. (1995) Infraphylum Chrysista Caval.-Sm. (1993) Superclass Fucistia Caval.-Sm. (1995) Class Xanthophycea Fritsch (1935) see Class Xanthophyceae P. Allorge ex Fritsch (1935) 1 Subclass Rhizochloridae Cavalier-Sm. (1993) 2 Subclass Tribophycidae Cavalier-Sm. (1993)