Strophomenata - Productida - Productellidae

Full reference: G. A. Cooper and R. E. Grant. 1969. New Permian brachiopods from west Texas. Smithsonian Contributions to Paleobiology 1:1-20

Parent taxon: Paucispiniferini according to A. Williams et al. 2000

Sister taxa: Anemonaria, Caricula, Caucasoproductus, Elliottella, Hystriculina, Jiguliconcha, Jinomarginifera, Lamnimargus, Lampangella, Liosotella, Paucispinifera, Retimarginifera, Transennatia

Subtaxa: Oncosarina rotunda, Oncosarina spinicostata, Oncosarina whitei

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Ecology: stationary low-level epifaunal suspension feeder