The Ancestors of Snakes Were It, Ancient Snakes Were Like This
The Earth has existed for billions of years, nurturing many life forms over those billions of years. Life existed on ancient Earth, and one of them was the Hethliusaurus.

Hethliusaurus is an extinct species of placodont. Many modern pythons and tegus still have small bone fragments in their bodies, which are believed to be remnants of the hind limbs of snakes that existed in the Hethliusaurus era, having undergone millions of years of evolution. These Hethliusaurus were about 1 meter long. This animal was like a snake, with a long and slender body, but its head looked more like a lizard. It lived in the water, likely swimming in the water with its flexible body. It lived in the early Cretaceous Asia.

From a visual perspective, it does not belong to the dinosaur series, but to the snake series, but it looked like a snake but wasn't a snake, because it had feet. Some say that Hethliusaurus was not one of the ancestors of snakes, but why are they so similar?
Just like the Beijing-discovered Shanxin Caveman, they didn't look exactly like modern humans, but we still consider them our ancestors, they constantly adapted to the natural environment and evolved step by step to become the intelligent humans of today.