Traits name details
original description
Martinson, G.G.; Shuvalov, V.F. (1976). Stratigrafiya i iskopayemyye mollyuski nizhnemelovykh ozernykh otlozheniy Zaaltayskoy Gobi v Mongolii [Stratigraphy and fossil molluscs of the Lower Cretaceous lacustrine deposits of the Trans-Altai Gobi in Mongolia]. In: Martinson, G.G. (Ed.) Iskopayemyye presnovodnyye mollyuski i ikh znacheniye dlya paleolimnologii. Nauka, Leningrad, pp. 20-50., available online at http://mmtk.ginras.ru/pdf/iskopaem_presnovodn_moll_1980.pdf page(s): 39-40, pl. 2, fig. 5 [details]
additional source
Martinson, G. G. (1982). Pozdnemelovyye mollyuski Mongolii: sistematika, stratigrafiya, tafonomiya [Late Cretaceous mollusks of Mongolia: taxonomy, stratigraphy, taphonomy]. <em>Trudy Sovmestnaya Sovetsko-Mongol'skaya Paleontologicheskaya Ekspeditsiya.</em> 17: 1-82., available online at https://www.geokniga.org/books/10159 page(s): 55, pl. 12, fig. 3 [details] Available for editors 
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