†suborder Calostylina Prantl 1957 (horn coral)
Parent taxon: Stauriida according to D. Hill 1981
Sister taxa: Arachnophyllina, Aulophyllina, Caniniina, Columnariina, Cyathophyllina, Diffingiina, Hillia, Ketophyllina, Kleopatrinidae, Lithostrotionina, Lomaphyllum, Lonsdaleiina, Lophophyllidiidae, Lophotichiidae, Lycophyllina, Metriophyllina, Mictocystoides, Petalaxidae, Petraphyllidae, Plerophyllina, Ptenophyllina, Stauriina, Stereolasmatina, Streptelasmatina, Yatsengiidae
Subtaxa: Calostylicae
Ecology: stationary epifaunal suspension feeder