†family Pycnolithidae Lindström 1899 (tabulate coral)
Anthozoa - Heliolitida - Pycnolithidae
Parent taxon: Coccoseridicae according to D. Hill 1981
Sister taxa: Coccoserididae, Ellisitidae, Palaeoporitidae, Pragnellia, Urceopora
Subtaxa: Pycnolithus
Ecology: stationary epifaunal suspension feeder-photosymbiotic
Distribution: