Fossil remains of the representatives of genus Mustela from Upper Pleistocene and Holocene levels in Bliznets Cave, located near Nakhodka City, are found to belong to five species: M. erminea, M. sibirica, M. eversmanii, M. altaica, and M. nivalis. Mandibles of M. sibirica may be segregated from those of M. eversmanii on the basis of position of the incision on angular process. All species, except M. eversmanii, currently occur in the southern part of the Russian Far East, while the distribution range of the steppe polecat is shifted to 400-500 km westwards.