Gymnolaemata - Cheilostomata - Calwelliidae
Synonym: Onchoporidae Levinsen 1909
Parent taxon: Schizoporelloidea according to D. P. Gordon 2012
See also Bassler 1953
Sister taxa: Acoraniidae, Actisecidae, Bryobaculidae, Buffonellodidae, Cheiloporinidae, Cryptosulidae, Cyclicoporidae, Duvergieriidae, Echinovadomidae, Eminooeciidae, Escharinidae, Gigantoporidae, Hippaliosinidae, Hippopodinidae, Illusiopora, Lacernidae, Margarettidae, Mawatariidae, Microporellidae, Myriaporidae, Ostrovskia, Pacificincolidae, Petraliellidae, Petraliidae, Phoceanidae, Phorioppniidae, Porinidae, Robertsonidridae, Schizoporellidae, Schizoporellopsis, Stomachetosellidae, Tetraplariidae, Teuchoporidae, Tshokrakopora, Vicidae
Subtaxa: Calwellia Ichthyaria Ijimaiellia Malakosaria Onchoporella Onchoporoides Wrigiana
Type: Calwellia
Ecology: stationary epifaunal suspension feeder
Distribution: found only at Computer Media (SDSNH 3278) (Eocene of California)