Approximately 290 million years ago, a carnivorous dinosaur stomping around present-day Germany had a tummy ache. Unlike most ancient regurgitated meals, this particular mixture of half-eaten prey and digestive bacteria successfully fossilized into what’s known as a regurgitalite. Bones tell researchers a lot about ancient species, but they can’t provide the whole picture. Computed tomography scans allowed them to reconstruct the fossil’s dozens of half-digested bones in 3D, which they then matched to known species. No matter its true identity, the ancient predator’s upset stomach yielded a remarkable time capsule into Paleozoic life, death, and regurgitation.