For citations:

Sadovnikov G.N. Evolution of the plants and invertebrates in the north of the Middle Siberia and environs at the Permian - Triassic boundary. Proceedings of higher educational establishments. Geology and Exploration. 2017;(6):7-17. (In Russ.) https://doi.org/10.32454/0016-7762-2017-6-7-17