December 10 Road Closure Near Visitor Center
December 10: Badlands Loop Road (Highway 240) will be temporarily closed at Cedar Pass for emergency repair work. The closure is expected to be in place for two to three weeks, weather dependent. An alternate route to access Interstate 90 will be posted. More »
The White River Badlands contain the largest assemblage of known late Eocene and Oligocene mammal fossils. Fossil research from the area contributed significantly to the science of vertebrate paleontology in North America, beginning with the description of a titanothere mandible in 1846 by Dr. Hiram Prout. Since then numerous important finds from the area have informed scientists about ancient animals, climates, and ecosystems from different geologic time periods. Oligocene fossil remains include camels, three-toed horses, oreodonts, antelope-like animals, rhinoceroses, deer-like mammals, rabbits, beavers, creodonts, land turtles, rodents and birds.
Marine fossils are found in deposits of an ancient sea that existed in the region some 75 to 67 millionyears ago during the Cretaceous period. Fossils found in the Pierre Shale and Fox Hills Formations include ammonites, nautiloids, fish, marine reptiles, and turtles.
The spectacular vertebrate fossils preserved within the White River Badlands have been studied extensively since 1846 and are included in museum collections throughout the world.
Did You Know?
25% of Badlands National Park is a designated wilderness area. Established in 1976, the Badlands Wilderness Area consists of 64,144 acres of the largest prairie wilderness in the United States. Administered in two units, Sage Creek and Conata Basin, the area is open for backpacking and exploration.