original description
King, S. G. (1926). Notes on the fossils shells of the Sanmen Series. <em>Bulletin of the Geological Society of China.</em> 5, 157-159.
page(s): 157 [details] Available for editors [request]
additional source
Yen, T.-C. (1943). Review and summary of Tertiary and Quaternary non-marine mollusks of China. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 95: 267-309.
page(s): 303 [details] Available for editors [request]
From editor or global species database
Type locality "Tientsin" [= Tianjin] (China) [details]