Dinosaur tracks found in Australia have revealed new clues pointing to a prehistoric river crossing.
At a site called Lark Quarry as many as 4,000 fossilized dinosaur tracks are preserved in an area the size of a basketball court. The huge number of prints was thought to be the result of a stampede, but now researchers believe that the tracks could have actually been made at a location used by large numbers of dinosaurs to cross a river.
"There are certainly some footprints there that I've seen that are consistent with a small dinosaur that is swimming and it can't quite touch the bottom with its toes, but it still looks like we are talking about a significant group of dinosaurs all moving together as one mob," said paleontologist Paul Willis.
"Fossilized track marks from a stampede of dinosaurs in Australia actually may have come from swimming animals, new research suggests."
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