While studying ancient soils in the Bograd region, students of the Biological Institute performing a practicum in the Republic of Khakassia discovered large bone remnants that supposedly belong to the ancestor of woolly mammoths—the trogontherium elephant. These mammals lived in the early Pleistocene—from 800 to 400 thousand years ago. Such findings are much less common than bones of woolly mammoths, and are of great interest to scientists.