At the end of the last Ice Age about 11,000 years ago, many large mammals became extinct. Now, researchers have uncovered the body of one of these animals frozen in time. They've discovered the complete body of a 9,000-year-old bison within Eastern Siberia.
The bison itself is what is known as a Steppe bison, and it's the most complete frozen mummy of this species found to date. Now called the Ykagir bison mummy, the specimen has a complete brain, heart, blood vessels and digestive system, though some organs have shrunk significantly over time.