†Gyrodendron Quenstedt 1880 (stony coral)
Anthozoa - Scleractinia - Calamophylliidae
Parent taxon: Calamophylliidae according to J. W. Wells 1956
Sister taxa: Antilloseris, Baryphyllia, Calamophyllia, Ferrya, Gonioseris, Protoseris, Rabdastrea, Sematethmos, Stiboria, Viminohelia
Subtaxa: Gyrodendron boltonae, Gyrodendron lobatum, Gyrodendron proliferum, Gyrodendron serbica
Ecology: stationary intermediate-level epifaunal microcarnivore-photosymbiotic