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 Animalia Linnaeus, 1758 - animals
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         Phylum Priapulida Delage & Hérouard, 1897 - priapulids
           Family Priapulidae Gosse, 1855
             1 Genus Priapulus Lamarck, 1816
             2 Genus Priapulopsis Koren & Danielssen, 1875
             3 Genus Acanthopriapulus van der Land, 1970
             4 Genus Halicryptus v. Siebold, 1849