Now think about mud and weather.
What happened to preserve that muddy track for 2 days, much less 200 million years?
You know that if you make a track in some mud, it will last until the next rain storm or the next creature comes along.
There are others, elsewhere on Earth that have been preserved in ROCK for a very long time, some even human.
So what happened to that dinosaur track after it was made?
Answer: NOTHING!
No wind? No rain? No snow? No nothing?.... And for a very long time.........
Now, some will say it must have been filled with volcanic ash that buried it and then was itself eroded away over millions of years revealing the footprints in their pristine condition.
Maybe..................