Using the X-ray technology of the European Synchrotron radiation Accelerator, the researchers scanned a fossil of a true-footed snake hidden in an ancient rock dating back 9500 million years  It turns out that this snake is very similar to modern terrestrial lizards, which helps to unravel the mystery of the origin of snakes  The research report points out that the snake is 50 centimeters long  On the surface, it has only one foot, about 2 centimeters long  The other foot of the real foot snake was found by X-ray scanning
The reason why this foot is not easy to detect is that it was alienated in the rock, with only four bones in its ankle and no toes, indicating that the feet of true-footed snakes had deteriorated at that time
The true-footed snake lived at a time when snakes evolved from a legged animal to non-footed animal.