†family Placosmiliidae Alloiteau 1952 (stony coral)
Parent taxon: Faviina according to D. Turnsek 1997
Sister taxa: Columastreidae, Faviicae, Heliastraeidae, Isastreidae, Misistellidae, Mussidae, Oculinidae, Pamiroseriidae, Phyllocoeniidae, Placocoeniidae, Stylophyllicae, Tropidastraeidae
Subtaxa: none
Ecology: stationary intermediate-level epifaunal photosymbiotic-suspension feeder