Woolly mammoth (Mammuthus primigenius)

Woolly mammoths (Mammuthus primigenius), perhaps the best-known mammals of the ice ages, went extinct due to a combination of shifting climate, changing food sources and a new predator—humans. Even without other factors, rapid changes in climate can drive species toward extinction. This mammoth skeleton will be on display alongside more than 700 specimens in “The David H. Koch Hall of Fossils—Deep Time."

Credit: Smithsonian Institution