organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Domain Eukaryota Chatton, 1925 - eukaryotes Kingdom Chromista Caval.-Sm. (1981) - chromists Phylum Oomycota Arx (1967) Family Eurychasmataceae H.E. Petersen (1905), incertae sedis Genus Eurychasma Magnus (1905) Genus Eurychasmidium Sparrow (1936)