There are a number of paleontologist that now classify this as a simple “aquatic dinosaur like .... ready for it....lizard”.
Not a snake.
Dinosaurs aren't lizards. Snakes are a variety of lizard, in the modern classification system, but a variety that lost its legs long before any other lizard class did.
PS You realize that some snakes, even today, have tiny useless leg bones, right? Pelvises, too. Pelvises are for attaching leg bones.
