Parent taxon: Animalia according to M. A. Ruggiero et al. 2015
See also Edgecombe et al. 2011, Nielsen 2012 and Zrzavy et al. 1998
Sister taxa: Diploblastica, Homoblastica, Hyolithelminthida, Vertebrosa, Westgardia, Kuckaraukia, Yangtziramulus, Megathrix, Euradiculata, Eodiorygma, Arboreomorpha, Limacites, Bomakellia, Palaeacmaea, Mesozoa, Hadryniscala, Erniettomorpha, Odontogriphidae, Xidazoon, Broccoliforma, Protolyellia, Yunnanomedusa, Sentularia, Chenmengella, Hadrynichorde, Kimberellomorpha, Somatohelix, Oligoopilionus, Gaojiashania, Atalotaenia, Muricassis, Problematica, Lazaichnus, Siphonoconcha, Ventogyrus, Khasaktidae, Tentaculitoidea, Goettingenia, Eumetazoa, Kinzeriidae, Convolutubus, Parazoa, Subtilicyathus, Proarticulata, Chondroplon, Helanoichnus, Persimedusites, Dorfopterus, Tetraradialomorpha, Silicea, Deuteronectanebos, Spygoria, Petalonamae, Pentaradialomorpha, Cnidaria, Scenellopsis, Trichoplax, Bilaterialomorpha, Epitheliozoa, Yelovichnus, Triradialomorpha, Porifera, Gephyrea, Evmiaksia, Lomosovis, Lidaconus, Bronicella, Silicispongea, Dictyorhabdus, Macrocypris kayi
Subtaxa: Alienum Dickinsoniomorpha Eubilateria Ikaria Rhombocorniculum Siphusauctidae