Organismen see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Plantae Haeckel (1866) - plants
     Subkingdom Protophyta
       1 Class Phytarcha
       2 Class Diatomeae Haeckel (1889) see [unranked] Diatomea Kütz. (1844)
       3 Class Cosmariae
       4 Class Palmellariae
       5 Class Siphoneae see Series Siphoneae