During their expedition in the Achinsk District of the Krasnoyarsk Krai, a group of researchers led by Sergey Leshchinskiy, head of TSU's Laboratory of Mesozoic and Cenozoic Continental Ecosystems, discovered a previously unknown location of dinosaur and mammoth fauna. The remains of dinosaurs were found in the Big Ilek open-pit mine, and above them, there is a horizon with bones of mammoths.
The main task of the trip was not to search for fossil organisms, but to make detailed stratigraphic description of the entire stratum of the open-pit mine. But in the process of geological research, scientists found the remains of large herbivorous (presumably sauropods and stegosaurs) and carnivorous dinosaurs. In the mammoth level, they found bones of mammoths, rhinoceroses, and predators.
The head of the expedition notes that it was very difficult to investigate what was uncovered. The open-pit mine, from 40 to 60 meters high, is overgrown with vegetation in some areas, and on the other side are sheer falling walls. As a result, the expedition members had to dig a lot and simultaneously use climbing equipment.
In its structure, the new location resembles the Shestakovsky Yar in the Kemerovo Region, where one of the largest clusters of dinosaur and mammoth fauna in Russia is located. Sergei Leshchinskiy says that these two open-pit mines are very similar in geology, and the only thing that has not yet been found in the Big Ilek is the Paleolithic artifacts (the ancient stone age of mankind). The TSU scientists plan to continue research on the unique open-pit mines in the Krasnoyarsk Krai.