| A fossil leaf from a Tertiary Period geologic rock formation one can examine in California's Gold Country, western foothills of the Sierra Nevada, along the route to the upper Miocene Disaster Peak Formation plants, High Sierra Nevada. It's an undescribed leaf (as of 2018, not yet identified in the published paleobotanical literature) from the middle Eocene Ione Formation (approximately 48 to 45 million years old) exposed at classic Lygodium Gulch, not far from Ione, Amador County, California. |