This hypothesis was strengthened in 2015 by the discovery of a 113-million-year-old fossil of a four-legged snake in Brazil that has been named "Tetrapodophis amplectus". It has many snake-like features, is adapted for burrowing and its stomach indicates that it was preying on other animals. It is currently uncertain if "Tetrapodophis" is a snake or another species, in the squamate order, as a snake-like body has independently evolved at least 26 times. "Tetrapodophis" does not have distinctive snake features in its spine and skull.