Trilobita - Agnostida - Tsunyidiscidae

Synonyms: Emeidiscus Li 1980, Guizhoudiscus Zhang et al. 1980, Hupeidiscus Zhang 1974, Mianxiandiscus Zhang et al. 1980, Shizhudiscus Zhang et al. 1980

Parent taxon: Tsunyidiscidae according to H. B. Whittington et al. 1997

Sister taxa: none

Subtaxa: Hupeidiscus fengdongensis, Hupeidiscus kunshanensis, Tsunyidiscus aclis, Tsunyidiscus chintingshanensis, Tsunyidiscus niutitangensis, Tsunyidiscus pertenus, Tsunyidiscus tingi, Tsunyidiscus yanjiazhaiensis

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Type: Hebediscus niutitangensis

Ecology: slow-moving nektonic suspension feeder