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 Embryobionta Cronquist, Takht. & W.Zimm.
         Division Bryophyta A.Braun (1864) - mosses and liverworts see Phylum Bryophyta A.Braun (1864)
           Class Anthocerotopsida Jancz. (1872) - hornworts
             Order Anthocerotales Limpr. (1877)
               Family Anthocerotaceae Dumort.
                 1 Genus Anthoceros L. (1753)
                 2 Genus Aspiromitus Steph. (1916)
                 3 Genus Dendroceros Nees (1846)
                 4 Genus Megaceros Campb. (1907)
                 5 Genus Notothylas Sull. ex A.Gray (1846)
                 6 Genus Phaeoceros Prosk. (1951)