Researcher: Dinosaur fossils come in various forms, including mineralized bones and tracks in dried mud flats. However, mineralized dinosaur bones and dinosaur tracks in dried mud flats are rarely found together. This isn' t surprising, because creatures that scavenged dinosaur carcasses most likely frequented mud flats to find food.
Scavengers commonly drag a carcass away from the site where it was found would most strengthen the researcher's argument.