Lower Permian Gastropods of Shakhtau (Asselian–Sakmarian Boundary Beds, Southern Cisuralia) A. V. Mazaev OriginalPaper 10 March 2020 Pages: 1237 - 1345
To the Revision of Freshwater Permian and Triassic Ostracods of the Genus Gerdalia Belousova, 1961 M. A. Naumcheva OriginalPaper 10 March 2020 Pages: 1346 - 1358
