Rhynchonellata - Rhynchonellida - Cyclothyrididae

Full reference: D. A. B. Pearson. 1977. Rhaetian brachiopods of Europe. Neue Denkschriften des Naturhistorischen Museums in Wien 1:1-85

Parent taxon: Cyclothyridinae according to A. Williams et al. 2002

Sister taxa: Almerarhynchia, Aucklandirhynchia, Bicepsirhynchia, Costirhynchopsis, Cyclothyris, Globirhynchia, Granulirhynchia, Halorellina, Hesperorhynchia, Lacunaerhynchia, Lamellaerhynchia, Lepidorhynchia, Owenirhynchia, Pararhactorhynchia, Plicarostrum, Proteorhynchia, Rudirhynchia, Septaliphoria, Septocyclothyris, Squamirhynchia, Sulcirhynchia, Timorhynchia, Torquirhynchia, Yidunella, Yulongella

Subtaxa: Fissirhynchia fissicostata, Fissirhynchia pacifica, Fissirhynchia wakefieldensis

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Type: Rhynchonella fissicostata

Ecology: stationary epifaunal suspension feeder