Coprolites are fossilized poop. They may range from a few thousand years to tens of millions of years old. The term dates back to 1829 when it was coined by the British geologist William Buckland. While the producer is rarely identified, the fossils can tell us a surprising amount of information. The contents can be analyzed. We can identify whether the producer ate plants or meat. The remains of parasites can give us some insight into diseases and parasitism. Most fossils tell us about the physical structure of the animals they represent. Coprolites give us a sense of paleoecology. More coprolites can tell us much more information. Caves were occupied by humans over many thousands of years, and the resulting coprolites can tell is a great deal. We can tell what people ate and get a sense of the variety. We can sometimes identify specific species of plants by the remains of pollen, and since we know the seasonal succession of plants, pollen can help us get a sense of how diet might have changed with the seasons. The remains of parasites can provide a lot of information about the diseases those humans faced.