†Stelidioseris Tomes 1893 (stony coral)
Anthozoa - Scleractinia - Actinastreidae
Parent taxon: Actinastreidae according to H. Löser 2012
Sister taxa: Actinastrea, Agrostyliastraea, Allocoenia, Allocoeniopsis, Araucanastrea, Chondrocoenia, Coenastraea, Columactinastraea, Floriastrea, Holocoenia, Stephanastrea, Texastrea
Subtaxa: Stelidioseris bellensis, Stelidioseris decaphylla, Stelidioseris gibbosa, Stelidioseris hourqi, Stelidioseris japonica, Stelidioseris kunthi, Stelidioseris major, Stelidioseris pattoni, Stelidioseris pseudominima, Stelidioseris retifera, Stelidioseris tendagurensis, Stelidioseris tourtiensis, Stelidioseris whitneyi
Type: Stelidioseris gibbosa
Ecology: stationary intermediate-level epifaunal photosymbiotic-suspension feeder