Middle Jurassic Retroceramids and Unionids from the Izhma River Basin, North of European Russia

[11] Yanovich L.(2009)Die Inoceramen-Schichten an dem Olenek und der Lena, Stratigr. Geol. Correl 17 68-78

[12] Koshelkina Z.V.(2011)Correlation of the Bajocian and Bathonian zones in light of new paleontological data Stratigr. Geol. Correl 19 502-514

[13] Lahusen I.I.(2014)Modern comprehensive zonal scale for the Jurassic of Siberia and the Boreal standard Stratigr. Geol. Correl 22 28-43

[14] Meledina S.V.(2014)The Upper Bajocian–Lower Bathonian of Pechora River basin and Boreal–Tethyan correlation Abh 271 95-121

[15] Meledina S.V.(2015)The Upper Bajocian–Lower Bathonian boundary section in the outskirts of Saratov: Molluscan characteristics and biostratigraphy Abh 277 307-335

[16] Nikitenko B.L.(1994)Middle Jurassic stratigraphy in the southwestern part of the Republic of Tatarstan Lauterbornia 15 59-77

[17] Shurygin B.N.(2013)Biostratigraphy and sedimentary settings of the Upper Bajocian–Lower Bathonian in the vicinity of Saratov (Central Russia), Russ. Geol. Geophys 54 808-837

[18] Dzyuba O.S.(2009)Biostratigraphy and sedimentary settings of the Bajocian–Bathonian beds in the Izhma River basin (European North of Russia), GFF 131 183-194

[19] Knyazev V.G.(1820)Die Subspezies von Unio crassus Philipsson 1788 im Einzugsgebiet der mittleren Donau (Mollusca: Bivalvia, Unionidae) Sci. Phys. Bruxelles 5 287-322

[20] Mitta V.V(2005)Jurassic and Cretaceous stratigraphy of the Anabar area (Arctic Siberia, Laptev Sea coast) and the Boreal zonal standard Geol 80 17-25

[11] Yanovich L.(2009)Die Inoceramen-Schichten an dem Olenek und der Lena, Stratigr. Geol. Correl 17 68-78

[12] Koshelkina Z.V.(2011)Correlation of the Bajocian and Bathonian zones in light of new paleontological data Stratigr. Geol. Correl 19 502-514

[13] Lahusen I.I.(2014)Modern comprehensive zonal scale for the Jurassic of Siberia and the Boreal standard Stratigr. Geol. Correl 22 28-43

[14] Meledina S.V.(2014)The Upper Bajocian–Lower Bathonian of Pechora River basin and Boreal–Tethyan correlation Abh 271 95-121

[15] Meledina S.V.(2015)The Upper Bajocian–Lower Bathonian boundary section in the outskirts of Saratov: Molluscan characteristics and biostratigraphy Abh 277 307-335

[16] Nikitenko B.L.(1994)Middle Jurassic stratigraphy in the southwestern part of the Republic of Tatarstan Lauterbornia 15 59-77

[17] Shurygin B.N.(2013)Biostratigraphy and sedimentary settings of the Upper Bajocian–Lower Bathonian in the vicinity of Saratov (Central Russia), Russ. Geol. Geophys 54 808-837

[18] Dzyuba O.S.(2009)Biostratigraphy and sedimentary settings of the Bajocian–Bathonian beds in the Izhma River basin (European North of Russia), GFF 131 183-194

[19] Knyazev V.G.(1820)Die Subspezies von Unio crassus Philipsson 1788 im Einzugsgebiet der mittleren Donau (Mollusca: Bivalvia, Unionidae) Sci. Phys. Bruxelles 5 287-322

[20] Mitta V.V(2005)Jurassic and Cretaceous stratigraphy of the Anabar area (Arctic Siberia, Laptev Sea coast) and the Boreal zonal standard Geol 80 17-25