original description
Gu, Z.-W. (1962). Note on the occurrence of some late Cretaceous fresh-water lamellibranchs in the Chusiung district of Central Yunnan with a brief review on the continental Cretaceous of Yunnan. <em>Acta Palaeontologica Sinica.</em> 10(3): 287-307.
page(s): 293-295, 303-305, pl. 1, figs 1-11 [details] Available for editors [request]
additional source
Chen, J.-H. (1990). On the attribution of <em>Trigonioides yunnanensis</em> Ku et Ma. <em>Acta Palaeontologica Sinica.</em> 29(2): 183-192. [details] Available for editors [request]
From editor or global species database
Type locality "Top of the mountain near Chusichung in Chusiung district of Central Yunnan. The lower part of the Chiangtiho tzu of the Yenfeng chun" [details]