†Zonophyllum Wedekind 1924 (horn coral)
Anthozoa - Cystiphyllida - Cystiphyllidae
Alternative spelling: Cystiphyllum (Zonophyllum)
Parent taxon: Cystiphyllidae according to Pedder 2004
Sister taxa: Asperophyllum, Atopocystis, Bucanophyllum, Ceriocysta, Coleophyllum, Cystiphylloides, Cystiphyllum, Diplochone, Edaphophyllum, Holcocystis, Mackenziephyllum, Microplasma, Pseudodigonophyllum
Subtaxa: Zonophyllum lonense
Ecology: stationary epifaunal suspension feeder