소개
In the early 1900s, paleontologists unearthed the Age of Mammals when they found full skeletons of extinct Miocene mammals in the hills of Nebraska -- species previously only known through fragments. At the same time, an age of friendship began between rancher James Cook and Chief Red Cloud of the Lakota. These two unprecedented events are preserved and protected here... at Agate Fossil Beds.
출처: U.S. National Park Service (NPS). 일부 이미지는 third-party 라이선스이며 표기된 출처를 따릅니다. 운영시간·입장료 등 최신 정보는 공식 안내를 확인하세요.