†family Acervulariidae Fromentel 1861 (horn coral)
Parent taxon: Columnariina according to D. Hill 1956
Sister taxa: Chonophyllidae, Columnariidae, Disphyllidae, Lonsdaleiidae, Phillipsastreidae
Subtaxa: Acervularia, Diplophyllum, Oliveria, Rhapidophyllum
Ecology: stationary epifaunal suspension feeder