Evidence of bear remains in a cremation burial in the Moscow region (Burial 5, Kremenye burial ground on the upper river Oka, 12th century) :

von Syrovatko, Alexander S., Svirkina, N. G., Plekhanova, Liudmila
Veröffentlicht in Bear and Human, Volume 2 | ISSN: 9782503606118
Turnhout : Brepols, 2023.
Umfang/Format: pages 639-650 : illustrations, maps, plans, charts.