Chepalyga, A.L. 1964. Cenozoic freshwater molluscs of the south of the Russian Plain and their stratigraphic importance. Proceedings of the Geological Institute of the USSR Academy of Sciences 166: 1-176.
Chepalyga, 1964. Proc. Geol. Inst. USSR Acad. Sci. 166: 38, pl. 4, fig. 1.
Chepalyga, 1964. Proc. Geol. Inst. USSR Acad. Sci. 166: 42, pl. 3, fig. 1.
Chepalyga, 1964. Proc. Geol. Inst. USSR Acad. Sci. 166: 42, pl. 3, fig. 1b.
(intro'd as intra-sp. of Margaritifera (Pseudunio) robusta Chepalyga, 1964)
Chepalyga, 1964. Proc. Geol. Inst. USSR Acad. Sci. 166: 43, pl. 4, fig. 2.
(intro'd as intra-sp. of Margaritifera (Pseudunio) robusta Chepalyga, 1964)