†Protoseris Milne-Edwards and Haime 1851 (stony coral)
Anthozoa - Scleractinia - Calamophylliidae
Parent taxon: Calamophylliidae according to J. W. Wells 1956
Sister taxa: Antilloseris, Baryphyllia, Calamophyllia, Ferrya, Gonioseris, Gyrodendron, Rabdastrea, Sematethmos, Stiboria, Viminohelia
Subtaxa: Protoseris jaccardi, Protoseris placenta, Protoseris recurvata, Protoseris robusta, Protoseris suevica, Protoseris waltoni
Type: Protoseris waltoni
Ecology: stationary intermediate-level epifaunal microcarnivore-photosymbiotic