Rhynchonellata - Spiriferida - Ambocoeliidae
Full reference: J. B. Waterhouse and S. Piyasin. 1970. Mid-Permian brachiopods from Khao Phrik, Thailand. Palaeontographica Abteilung A 135(3-6):83-197
Parent taxon: Ambocoeliinae according to A. Williams et al. 2006
Sister taxa: Ambocoelia, Attenuatella, Biconvexiella, Bisinocoelia, Cruricella, Crurithyris, Cyrtinoides, Dicoelospirifer, Echinocoelia, Eoplicoplasia, Guangxiispirifer, Metaplasia, Paracrurithyris, Plicoplasia, Spinoplasia, Swaicoelia
Subtaxa: Orbicoelia cordata, Orbicoelia dolomitensis, Orbicoelia elongatiformis, Orbicoelia extima, Orbicoelia flabelliformis, Orbicoelia fraterculus, Orbicoelia guadalupensis, Orbicoelia inflata, Orbicoelia magna, Orbicoelia pusilla, Orbicoelia speciosa, Orbicoelia tholiaphor, Orbicoelia tschernyschewi, Orbicoelia tumibilis
Ecology: stationary epifaunal suspension feeder