Pourtalocyathus Cairns 1979 (stony coral)
Anthozoa - Scleractinia - Guyniidae
Parent taxon: Guyniidae according to W. Kiessling 2008
Sister taxa: Cyathosmilia, Guynia, Onchotrochus, Schizocyathus, Stenocyathus
Subtaxa: Pourtalocyathus hispidus
Ecology: stationary intermediate-level epifaunal suspension feeder