Photos show well-preserved remains of 50,000-year-old baby mammoth found in Siberia

Researchers in Russia on Monday unveiled the remarkably well-preserved remains of a 50,000-year-old female baby mammoth found in thawing permafrost in the Yakutia region of Siberia.

The remains of the mammoth – which were nicknamed "Yana" after the river in whose basin it was discovered this summer – are the best-preserved mammoth carcass in the world. Experts said it is one of only seven whole remains ever found.

Yana is estimated to have been only about one year old when she died, weighs more than 397 pounds and measures about 4 feet and 200 centimeters long.