organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain eukaryotes see Domain Eukaryota Chatton, 1925
     related to multicellular groups
       Order Choanoflagellida Kent, 1880 - choanoflagellates see Class Choanoflagellatea Cavalier-Smith, 1998
         Family Acanthoecidae Norris, 1965
           Genus Spiraloecion Marchant & Perrin, 1986
             Spiraloecion didymocostatumᵀ H.J. Marchant & R. Perrin, 1986