Family Arachnidiidae Hincks 1880 (bryozoan)
Gymnolaemata - Ctenostomata - Arachnidiidae
Parent taxon: Ctenostomata according to P. D. Taylor and M. A. Wilson 1999
See also Bassler 1953
Sister taxa: Arachnoidella, Ascodictyidae, Cardiarachnidium, Carnosa, Casteropora, Cookobryozoon, Euctenostomata, Fischerella, Foraripora, Haimeina, Harmeriella, Marcusopora, Paludicellea, Ropalonariidae, Stolonicella, Stolonifera, Vesicularina, Vinellidae, Voigtella
Subtaxa: Arachnidium Simplicidium
Type: Arachnidium
Ecology: stationary epifaunal suspension feeder
Distribution: