MolluscaBase name details
original description
(of Physa efremowi Martinson, 1957 †) Martinson, G.G. (1957). Mezozoyskiye presnovodnyye mollyuski nekotorykh rayonov Vostochnoy i Tsentral'noy Azii. <em>Trudy Baikal'skoy Limnologicheskoy Stantzii Akademii Nauk SSSR.</em> 15: 262-336.
page(s): 320-21, pl. 2, fig. 20, textfig. 56 [details] Available for editors [request]
basis of record
Barsbold, R. (1972). Biostratigrafiya i presnovodnyye mollyuski verkhnego mela Gobiyskoy chasti MNR. Nauka, Moskva, 88 + 6 pls.
page(s): 75-76, pl. 6, figs 9-10 [details] Available for editors [request]