The ancient cemetery contains the remains of five people.
Newly discovered fossils have been unearthed from the famous Denisova Cave in the Altai Mountains, southern Siberia.
It was not immediately clear how many people were on board the aircraft but estimates range from 13-17 passengers.
Anthropologists in Germany have discovered an artifact that indicates the Neanderthals knew fine art.
Eighteen people were killed in a helicopter crash in the Krasnoyarsk region in Siberia on Saturday, the aviation watchdog and emergency services said.
At least 37 people died in a fire in a shopping mall in the Siberian city of Kemerovo on Sunday, Russian news agencies reported, citing authorities.
A wintry blast of freezing temperatures swept across Europe on Sunday.