†Cionodendrom Benson and Smith 1923 (horn coral)
Anthozoa - Stauriida - Lithostrotionidae
Parent taxon: Lithostrotionidae according to D. Hill 1956
Sister taxa: Acrocyathinae, Aulininae, Diphyphyllinae, Heterostrotion, Lithostrotioninae, Siphonodendron, Thysanophyllinae
Subtaxa: none
Ecology: stationary epifaunal suspension feeder