Kingdom Protoctista Hogg, 1860 Phylum Cryptophyta Caval.-Sm. (1986) - cryptomonads see Superclass Cryptomonada Cavalier-Smith, 2004 Class Cryptophyceae F.E. Fritsch (1927) Order Cryptococcales see Order Tetragonidiales 1 Genus Tetragonidinium nom null. see Genus Tetragonidium Pascher (1914)