Anthozoa - Scleractinia - Caryophylliidae
Alternative spellings: Acanthocyathus, Acanthocyatus
Parent taxon: Caryophyllia according to J. P. Chevalier 1961
See also Kosnik 2002, Sepkoski 2002 and Wells 1954
Sister taxa: Caryophyllia (Ceratocyathus), Caryophyllia (Premocyathus), Caryophyllia aequalis, Caryophyllia alaskensis, Caryophyllia arnoldi, Caryophyllia blakeleyensis, Caryophyllia calcitrapa, Caryophyllia californica, Caryophyllia calveri, Caryophyllia capayensis, Caryophyllia charrieri, Caryophyllia cladaxis, Caryophyllia clavus, Caryophyllia comanchei, Caryophyllia constricta, Caryophyllia crassicosta, Caryophyllia dalli, Caryophyllia degenerans, Caryophyllia denaria, Caryophyllia dentonensis, Caryophyllia gracilis, Caryophyllia granulosa, Caryophyllia inops, Caryophyllia japonica, Caryophyllia konincki, Caryophyllia lamellifera, Caryophyllia leptaxis, Caryophyllia mcglameryae, Caryophyllia mediavia, Caryophyllia neglecta, Caryophyllia oregonensis, Caryophyllia paucipaliata, Caryophyllia pedroensis, Caryophyllia pentaradiata, Caryophyllia quadragintaseptae, Caryophyllia salinaria, Caryophyllia sarsiae, Caryophyllia sciolzensis, Caryophyllia scobinosa, Caryophyllia simplex, Caryophyllia sismondai, Caryophyllia smithii, Caryophyllia suevica, Caryophyllia texana, Caryophyllia truncata, Caryophyllia vermicularis, Caryophyllia woodmanensis, Caryophyllia wynoocheensis
Subtaxa: Acanthocyathus grayi Acanthocyathus spinosa Caryophyllia (Acanthocyathus) fernandesi Caryophyllia (Acanthocyathus) laterocristatus Caryophyllia (Acanthocyathus) transilvanicus Caryophyllia (Acanthocyathus) verrucosus Caryophyllia (Acanthocyathus) versicostatus
Ecology: stationary low-level epifaunal suspension feeder
Distribution:
• Quaternary of Indonesia (2 collections), Vanuatu (1)
• Pliocene to Pleistocene of the Philippines (1)
• Pliocene of Indonesia (5), Japan (1)
• Miocene of Brazil (4), Czechia (1), France (1), Indonesia (4), Italy (5), Morocco (2), Poland (4), Romania (2), Slovakia (2)
• Oligocene of France (2), Hungary (5)
• Cretaceous of Greenland (1)
Total: 43 collections including 53 occurrences