living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Plantae Haeckel (1866) - plants
       Subkingdom Thallobionta
         Division Eumycota see Kingdom Eumycota
           Subdivision Mastigomycotina
             Class Oomycetes G.Winter (1880) - oomycetes see Class Peronosporea
               Order Saprolegniales
                 ?Family Thraustochytriaceae Sparrow, 1943 ex Cejp (1959) see Family Thraustochytriidae Sparrow ex Cejp, 1959
                   Genus Althornia E.B.G.Jones & Alderman (1972) see Genus Althornia Jones & Alderman, 1972