Scientists have recently found 113-million-year-old fossils a four-legged snake and they believe these fossils are a direct ancestor of modern snakes. The fossils found from Brazil are the first four-legged snake that scientists have ever seen.

Researchers associated with the find said that the creature did not use its delicate arms and legs, which were 4mm and 7mm long, for walking rather it used them to grab its prey.

Furthermore, the recently found fossils shows that the creature lived in burrows and did not swim, which strengthens the idea that the species evolved on land, said researchers.

Dr Nick Longrich from the University of Bath, one of the study's authors, said, "This is the most primitive fossil snake known, and it's pretty clearly not aquatic".

While speaking to Science in Action on the BBC World Service, Dr Longrich said in explanation that tails of the creature was not paddle-shaped which could have been used for swimming, also it didn't had any signs of fins. But its long trunk and short snout were typical of a burrower, he said.

Dr Longrich stated that when he saw the images of the creature for the first time he was surprised seeing lots of advanced snake features including its hooked teeth, flexible jaw and spine and even snake-like scales.

He also mentioned that the 19.5cm fossil, now christened Tetrapodophis amplectus, swallowed another vertebrate and was preying on other animals, which is exactly same as that of snakes.