Aplocyathus d'Orbigny 1849 (stony coral)
Anthozoa - Scleractinia - Caryophylliidae
Synonyms: Odontocyathus Moseley 1881, Stephanocyathus (Odontocyathus) Moseley 1881
Parent taxon: Stephanocyathus according to D. F. Squires 1958
Sister taxa: Stephanocyathus (Acinocyathus), Stephanocyathus holcombensis, Stephanocyathus magnificus, Stephanocyathus tatei
Subtaxa: Odontocyathus minor, Odontocyathus radiatus, Odontocyathus sieberi, Odontocyathus sundaicus, Stephanocyathus (Odontocyathus) ixine
Ecology: stationary low-level epifaunal microcarnivore