For citations:

Kutygin R.V., Kilyasov A.N. Stratigraphic position of the ammonoid Paramexicoceras Popow in the Permian-Triassic deposits of the Southern Verkhoyanie, Northeast Russia. Arctic and Subarctic Natural Resources. 2022;27(4):475-485. (In Russ.) https://doi.org/10.31242/2618-9712-2022-27-4-475-485