Hexacorallia [subclass]
(254 species)

Scleractinia [order] (186)

Acroporidae [family] (3)

Agariciidae [family] (9)

Anthemiphylliidae [family] (1)

Astrocoeniidae [family] (10)

Caryophyllidae [family] (55)

Deltocyathidae [family] (6)

Dendrophylliidae [family] (24)

Flabellidae [family] (7)

Fungiacyathidae [family] (4)

Gardineriidae [family] (3)

Guyniidae [family] (1)

Meandrinidae [family] (6)

Merulinidae [family] (3)

Micrabaciidae [family] (2)

Montastraeidae [family] (1)

Mussidae [family] (19)

Oculinidae [family] (6)

Poritidae [family] (5)

Rhizangiidae [family] (4)

Schizocyathidae [family] (2)

Siderastreidae [family] (4)

Stenocyathidae [family] (1)

Turbinoliidae [family] (6)

[unassigned] Scleractinia [family] (4)