Strophomenata - Productida - Productellidae

Full reference: G. A. Cooper. 1957. Permian brachiopods from central Oregon. Smithsonian Miscellaneous Contributions 134(12):1-79

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

Sister taxa: Entacanthadus, Haydenoides, Jipuproductus, Marginifera, Otariella, Spinomarginifera

Subtaxa: Probolionia elongata, Probolionia minor, Probolionia posteroreticulata

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Type: Probolionia elongata

Ecology: stationary low-level epifaunal suspension feeder