Ancient serpent shows its leg By Jonathan Amos Science reporter, BBC News What was lost tens of millions of years ago is now found.A fossil animal locked in Lebanese limestone has been shown to be an extremely precious discovery - a snake with two legs. Scientists have only a handful of specimens that illustrate the evolutionary narrative that goes from ancient lizard to limbless modern serpent. Researchers at the European Light Source (ESRF) in Grenoble, France, used intense X-rays to confirm that a creature imprinted on a rock, and with one visible leg, had another appendage buried just under...