Years ago, researchers put the dark clay of the Gray Fossil Site under the microscope to explore the ancient environment of Gray, Tennessee, around five million years ago. They were looking for pollen, but also came across other forest inhabitants, including fossil fungi. While the pollen became the subject of a 2013 study investigating the ancient plants of the fossil site, an analysis of the fungi has now been published in the journal Mycosphere. Normally, when we think of fossils, we imagine hard, durable things like bones, teeth, shells, or seeds.