†family Montlivaltiidae Dietrich 1926 (stony coral)
Parent taxon: Faviicae according to J. W. Wells 1956
Sister taxa: Anthemiphylliidae, Faviidae, Meandrinidae, Merulinidae, Pectiniidae, Rhizangiidae, Tropiphyllidae
Subtaxa: Brevimaeandra, Ceratothecia, Clausastrea, Coenotheca, Complexastraeopsis, Complexastraeopsis, Complexastrea, Cyathophylliopsis, Dimorphocoenia, Elasmophyllia, Ellipsosmilia, Goldfussastraea, Goldfussastrea, Isastrea, Maeandramorpha, Mapucheastrea, Margarastreopsis, Montlivaltiinae, Montlivaltoides, Nerthastraea, Neuquinosmilia, Paraclausastraea, Paraphyllogyra, Peplosmilia, Placosmilia, Placosmiliinae, Puschastraea, Rhabdophyllia, Thecomeandra, Thecosmiliopsis, Trochophyllia, Trochosmilia
Ecology: stationary intermediate-level epifaunal photosymbiotic-suspension feeder