Pan-Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
     Eukarya R. Creti, F. Citarella, O. Tiboni, A. Sanangelantoni, P. Palm & P. Cammarano 1991 [Simpson 2020] see Domain Eukarya Chatton, 1925
       Archaeplastida Adl et al. 2005 [Simpson 2020]
         Rhodoplantae Saunders & Hommersand 2004 [Saunders 2020]
           Rhodophyta Wettstein 1901 [Saunders 2020]
             Proteorhodophytina Muñoz-Gómez, Mejía-Franco, Durnin, Colp, Grisdale, Archibald & Slamovits 2017 [Saunders 2020]
               1 Compsopogonophyceae Saunders & Hommersand 2004 [Saunders 2020]
               2 Porphyridiophyceae Yoon, Müller, Sheath, Ott & Bhattacharya 2006 [Saunders 2020]
               3 Rhodellophyceae Cavalier-Smith 1998 [Saunders 2020]
               4 Stylonematales Drew 1956 [Saunders 2020]