Anthozoa - Scleractinia - Rhizangiidae
Alternative spelling: Coenangia
Parent taxon: Astrangia according to T. W. Vaughan 1904
See also Sepkoski 2002
Sister taxa: Astrangia boreas, Astrangia calhounensis, Astrangia clarki, Astrangia coalingensis, Astrangia cretacea, Astrangia danae, Astrangia expansa, Astrangia floridana, Astrangia grandis, Astrangia harrisi, Astrangia insignifica, Astrangia leonensis, Astrangia lineatus, Astrangia ludoviciana, Astrangia manthelanensis, Astrangia persica, Astrangia talquinensis, Astrangia vasconiensis, Astrangia wilcoxensis
Subtaxa: Astrangia (Coenangia) conradi Astrangia (Coenangia) lamarensis Coenangia polygonalis
Ecology: stationary intermediate-level epifaunal suspension feeder
Distribution:
• Quaternary of Indonesia (1 collection), Mexico (1), New Zealand (1)
• Cretaceous of United States (1: Texas)
Total: 4 collections each including a single occurrence