Rhynchonellata - Terebratulida - Heterelasminidae

Full reference: Y. G. Jin and S. L. Ye. 1979. Permian brachiopod names. Paleontological atlas of northwest China, Qinghai Volume 1:70-131

Parent taxon: Heterelasminidae according to A. Williams et al. 2006

Sister taxa: Amurothyris, Gundarolasmina, Heterelasmina, Mimaria, Permicola, Qinglongia

Subtaxa: Pseudolabaia curvata, Pseudolabaia tumita

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Type: Dielasma curvata

Ecology: stationary epifaunal suspension feeder