Acontiophoridae
Actiniidae
Actinodendronidae
Actinoscyphiidae
Actinostolidae
Aiptasiidae
Aiptasiomorphidae
Aliciidae
Aurelianidae
Bathyphelliidae
Condylanthidae
Diadumenidae
Exocoelactiidae
Haliplanellidae
Hormathiidae
Iosactiidae
Isanthidae
Isophelliidae
Liponematidae
Metridiidae
Minyadidae
Nemanthidae
Paractidae
Phymanthidae
Sagartiidae
Sagartiomorphidae
Stichodactylidae
Thalassianthidae
Thenaria is an infraorder of cnidarian anthozoans of the suborder Nyantheae, order Actiniaria.