You have just made personal attacks and not actually refuted the facts that there are drawings of sauropods made before dinosaurs were discovered. I know of no way this can be true other than people saw sauropods. This is just one of many examples of artwork showing dinosaurs that we now know existed. There are many more. It also makes sense that the dinosaur "legends" from almost every culture on every continent ,except Antarctica, are based on people actually seeing dinosaurs.