Trilobita - Agnostida - Tsunyidiscidae

Full reference: Q. Z. Zhang and Z. M. Zhou. 1985. Early Cambrian trilobite fauna of Kunshan, Jiangsu. Acta Palaeontologica Sinica 24(2):259-266

Belongs to Hupeidiscus according to Q. Z. Zhang and Z. M. Zhou 1985

Sister taxa: Tsunyidiscus aclis, Tsunyidiscus chintingshanensis, Tsunyidiscus niutitangensis, Tsunyidiscus pertenus, Tsunyidiscus tingi, Tsunyidiscus yanjiazhaiensis, Hupeidiscus fengdongensis

Type specimen: Its type locality is Kunshan, Hupeidiscus-Sinodiscus assemblage, which is in a Nangaoian marine horizon in China

Ecology: slow-moving nektonic suspension feeder