Jenny McGuire, an assistant professor of earth and atmospheric sciences at Georgia Tech University, holds a small bone she unearthed in Natural Trap Cave in northern Wyoming, near Lovell, Wyo., on July 8, 2021. Thousands of animals have fallen into the cave and perished over the past 30,000 years, making the site a treasure trove for paleontologists. the site a treasure trove for paleontologists. (Mike Clark/The Billings Gazette via AP)