Paleontologists have examined a 183-million-year-old plesiosaur skeleton with well-preserved skin traces from around the tail and front flipper from the Early Jurassic Posidonia Shale of southern Germany. Life reconstruction of the Jurassic plesiosaur from the Posidonia Shale of southern Germany. Image credit: Joschua Knüppe. Plesiosaurs (‘near to lizard’ in Greek) are an iconic group of Mesozoic marine reptiles with a rich evolutionary history. These...