Another case where nobody really thinks it through.
Real ancient human "fossil" footprints have been found, but they are from the correct time frame, and rare.
If there had been enough human beings back then to leave fossil tracks, usually the result of a rare geological condition, you'd think that somewhere along the line someone would have found other human fossil remains among the countless dinosaur digs. Nobody has. How likely is that?
A real million-year-old fossil human footprint is seen below:
A detailed treatment on the Paluxy footprints can be found here, along with explanations.
See the differences?