Invalid subtaxa: Ancylopoda Gray 1848 [invalid subgroup], Arthropomata Owen 1858 [invalid subgroup], Articulata Huxley 1869 [invalid subgroup], Ecardines Bronn 1862 [invalid subgroup], Helictopoda Gray 1848 [invalid subgroup], Inarticulata Huxley 1869 [invalid subgroup], Lyopomata Owen 1858 [invalid subgroup], Testicardines Bronn 1862 [invalid subgroup]
Parent taxon: Phoronozoa according to J. Zrzavy et al. 1998
Sister taxa: Phoronida, Phlogites, Tentaculitida
Subtaxa: Acanthotretella, Agastapleura, Biarea, Clitambonoidea, Cornwallia, Craniiformea, Dirinus, Disciniformea, Eccentrotheca, Ernogia, Iphidella, Jilinia, Larium, Lathamella, Linguliformea, Longtancunella, Manosia, Nekvasilovella, Neogypidula, Pomatospirella, Punctospiracea, Reflexia, Rhynchoferella, Rhynchonelliformea, Rictia, Socraticum, Spondylobolus, Surindia, Tegulella, Tommotiida, Venezuelia, Virbium, Xianshanella, Yeosinella, Yongjia
Ecology: stationary low-level epifaunal suspension feeder