Oxysmilia Duchassaing 1870 (stony coral)
Anthozoa - Scleractinia - Caryophylliidae
Parent taxon: Caryophylliidae according to S. D. Cairns 1995
Sister taxa: Antillocyathus, Aulocyathus, Axocyathus, Bourneotrochus, Caryophylliinae, Caryosmilia, Ceratotrochus, Ceriosmilia, Citharocyathus, Coelosmilia, Coenocyathus, Conotrochus, Crispatotrochus, Cyathoceras, Dasmosmilia, Deltocyathus, Desmophyllinae, Discoidocyathus, Eusmiliinae, Goniocorella, Helloceras, Heterocyathus, Kraterostrobilos, Lophelia, Odontocyathoides, Paracyathus, Parasmiliinae, Parasmilinae, Polycyathus, Solenosmilia, Thecocyathinae, Turbinoliinae, Vaughanella, Vielicyathus
Subtaxa: Oxysmilia pliocenica
Ecology: stationary low-level epifaunal microcarnivore