Cyathotrochus Bourne 1905 (stony coral)
Anthozoa - Scleractinia - Turbinoliidae
Parent taxon: Turbinoliidae according to S. D. Cairns 1997
Sister taxa: Alatotrochus, Alveolocyathus, Bothrophoria, Conocyathus, Deltocyathoides, Foveolocyathus, Holcotrochus, Laminocyathus, Nicaeotrochus, Palocyathus, Paradeltocyathus, Peponocyathus, Sphenotrochus, Trematotrochus, Tropidocyathus, Turbinolia, Wellsotrochus
Subtaxa: Cyathotrochus pileus
Ecology: stationary intermediate-level epifaunal microcarnivore