†Opisthophyllum Ogilvie 1897 (stony coral)
Anthozoa - Scleractinia - Amphiastraeidae
Parent taxon: Amphiastreidae according to R. C. Baron-Szabo 2002
Sister taxa: Amphiastrea, Amphiaulastrea, Aulastraea, Bathmosmilia, Budaia, Bussonastrea, Ceratocoenia, Cheilosmilia, Discocoenia, Donacosmilia, Hexamphiastrea, Hexapetalum, Hispaniastraea, Hykeliphyllum, Keriophyllia, Lochmaeosmilia, Mitrodendron, Oyonnaxastraea, Pleurophyllia, Pleurostylina, Polymorphastraea, Pseudodiplocoenia, Quenstedtiphylliinae, Schizosmilia, Sclerosmilia, Selenegyra, Thamnosmilia
Subtaxa: Opisthophyllum minimum, Opisthophyllum vesiculare, Opisthophyllum zitteli
Type: Opisthophyllum zitteli
Ecology: stationary intermediate-level epifaunal microcarnivore-photosymbiotic