Full reference: O. Butchili. 1910. Vorlesungen über vergleichende Anatomie 1-931
Parent taxon: Metazoa according to K.J. Peterson et al. 2005
See also Nielsen 2012 and Tsai and Fordyce 2015
Sister taxa: Bilateria, Diploblastica, Homoblastica, Hyolithelminthida, Vertebrosa, Westgardia, Porifera, Agmata, Oligoopilionus, Tentaculitoidea, Nectocarididae, Helanoichnus, Lazaichnus, Yangtziramulus, Ventogyrus, Goettingenia, Cnidaria, Epitheliozoa, Subtilicyathus, Parazoa, Kuckaraukia, Trichoplax, Bomakellia, Problematica, Broccoliforma, Kinzeriidae, Khasaktidae, Gaojiashania, Erniettomorpha, Gephyrea, Proarticulata, Chondroplon, Sentularia, Spygoria, Somatohelix, Tetraradialomorpha, Kimberellomorpha, Bilaterialomorpha, Hadryniscala, Arboreomorpha, Muricassis, Triradialomorpha, Megathrix, Atalotaenia, Euradiculata, Hadrynichorde, Rhizostomites, Eodiorygma, Persimedusites, Protolyellia, Mesozoa, Dictyorhabdus, Scenellopsis, Xidazoon, Evmiaksia, Petalonamae, Lidaconus, Deuteronectanebos, Bronicella, Palaeacmaea, Yelovichnus, Yunnanomedusa, Pentaradialomorpha, Siphonoconcha, Odontogriphidae, Silicispongea, Lomosovis, Silicea, Chenmengella, Limacites, Convolutubus, Macrocypris kayi, Dorfopterus
Subtaxa: Ausiidae Bilateralomorpha Eoandromeda Funisia Neuralia Placozoa Plexus Quaestio Rangeomorpha Shufangtubulus Tribrachiomorpha Triploblastica Wutubus