Overdoses of willow bark may cause skin rash, stomach inflammation/irritation, nausea, vomiting, kidney inflammation, and tinnitus (ringing in the ears).
South Dakota, a state in the north central continental United States, is known as the Mount Rushmore State. This stems from the presence of the Mount Rushmore National Memorial near the city of Keystone in western South Dakota.
Age: Pleistocene. Year Designated: 2014. The Columbian mammoth became the official state fossil of South Carolina in 2014. South Dakota is the sixth state to make a mammoth the state fossil, and the second most recent to official name a state fossil.