Parent taxon: Octocorallia according to C. S. McFadden et al. 2021
See also Goedert et al. 2022, Sepkoski 2002 and Veron 2000
Sister taxa: Coenothecalia, Echmatocrinidae, Ellisella, Gorgonacea, Helioporacea, Heterocorallia, Pennatulacea, Plexauridae, Trachypsammia, Waiparaconidae
Subtaxa: Calcaxonia Isididae Nephthea Nephtheidae Nephtya Tubipora
Ecology: stationary intermediate-level epifaunal microcarnivore-photosymbiotic
Distribution:
• Quaternary of Australia (2 collections), Eritrea (1), Greece (1), Israel (1), Italy (2), Japan (4), the Marshall Islands (1), New Zealand (2), Saudi Arabia (1), the Seychelles (1)
• Pliocene of Australia (1), Indonesia (5), Italy (1), Japan (3)
• Miocene to Pliocene of Australia (1)
• Miocene of Indonesia (1), Iran (3), New Zealand (5), Spain (1)
• Whaingaroan of New Zealand (1)
• Eocene of Hungary (1), New Zealand (1), Spain (2), United States (1: California)
• Paleocene of New Zealand (1)
• Cretaceous of Denmark (1)
Total: 45 collections including 47 occurrences