†Thedusia Cooper and Grant 1976 (lamp shell)
Rhynchonellata - Athyridida - Neoretziidae
Full reference: G. A. Cooper and R. E. Grant. 1976. Permian Brachiopods of west Texas, V. Smithsonian Contributions to Paleobiology 24:2609-3159
Parent taxon: Hustediinae according to A. Williams et al. 2002
Sister taxa: Hustedia, Hustedtiella, Schwagerispira
Subtaxa: Thedusia angustata, Thedusia biconvexa, Thedusia bucrenata, Thedusia dischides, Thedusia discissa, Thedusia emarginata, Thedusia latisulcata, Thedusia magna, Thedusia mesocostata, Thedusia paucicostata, Thedusia procera, Thedusia trigonalis, Thedusia ventricosa
Ecology: stationary low-level epifaunal suspension feeder