Mammoth Injuries Indicate Humans Occupied Arctic Earlier than Thought. Excavations of the carcass from channel deposits unit. In this photo, Sergey Gorbunov is excavating the mammoth carcass. This material relates to a paper that appeared in the Jan. 15, 2016 issue of Science, published by AAAS. The paper, by V.V. Pitulko at Russian Academy of Sciences in St. Petersburg, Russia, and colleagues was titled, 'Early human presence in the Arctic: Evidence from 45,000-year-old mammoth remains.'