Plot Summary:Realistic CG documentary film focusing on prehistoric creatures of the Agate Fossil Beds during the Miocene, following Moropus and Daeodon, as they and other animals grow and adapt to the changing environment.
该纪录片讲述了渐新世-中新世之交,大片森林随气候变化成为草原之时,美国内布拉斯加州玛瑙泉一带最大的两种生物——凶齿豨和石爪兽挣扎求存的故事。