[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   [metazoans] Haeckel 1874 - multicellular animals see Kingdom Animalia Linnaeus, 1758
     Phylum †Archaeocyatha Vologdin, 1937 see Class Archaeocyatha Bornemann, 1884
       Order †Monocyathida Okulitch, 1935
         Genus †Debrennecyathus Vologdin, 1966