 The samples of the genus Otoceros, which is an important biostratigraphic marker of the Permian-Triassic boundary deposits of the Boreal realm, were found in the Cobioma Structural and Fasci's zone of the southern Verkoyansk region. These fossils indicate that the area was occupied by the Concavum and Boreal zones during the Lopinian stage of the Permian period and the Induans stage of the lower Triassic. This article was authored by R. V. Kutogen, for Budnikov, A. S. Byakov, and others.