Keywords: paleobotany fossil yellowstone national park yellowstonenationalpark food YELL_2323: This well preserved leaf is from an angiosperm. Fossilized leaves are very common within Yellowstone National Park. Collecting any natural resources, including rocks and fossils, is illegal in Yellowstone. Photo by Megan Norr; March 2016; Catalog #20809d; Original #YELL_2323 YELL_2323: This well preserved leaf is from an angiosperm. Fossilized leaves are very common within Yellowstone National Park. Collecting any natural resources, including rocks and fossils, is illegal in Yellowstone. Photo by Megan Norr; March 2016; Catalog #20809d; Original #YELL_2323 |