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What if the mud that preserved the prints was covered in water at the time the foot prints were made. Then the croc was just floating along with its back legs down.

I suspect some paleontologists extrapolate too much from small data points. Which is somewhat safe in their field, hows it going to be disproven?

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From TFA:

"We ruled out swimming because the trackways are so regular," said Martin Lockley, a paleontologist and professor at the University of Colorado and an author of the study.

"Modern crocs sometimes use hind feet to punt along, but the tracks are irregular incomplete, washed out splayed and not in a regular one foot in front of the next trackway pattern."

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