The Lark Quarry Conservation Park at Winton
had been believed to be the site of a dinosaur stampede from about 95
million years ago.
But after a two-year study, University of
Queensland PhD candidate Anthony Romilio says thousands of footprints
at the site were not made all together, but over a period of a few days
or weeks.
He believes the site is the bed of an ancient river
which dinosaurs were able to wade across, leaving footprints in the soft
mud.
"The dinosaurs seemed to be using this area as a highway in fact, and it didn't matter that it was covered in water," he said.
"Even very small dinosaurs ... the size of, say, chickens, were swimming, using the river current to assist their movements.
"The water there wasn't preventing them from going places."
Winton Mayor Butch Lenton says he hopes the new discovery will not affect tourism to the popular site.
He believes the river crossing claim will actually make the destination more interesting.
"There's tracks down there and there's always been views on how they were made," he said.
"But
it will be interesting because the different points of view [about] how
those tracks got there and how they happened, so it's all interesting."
Mr Romilio agrees his research does not make the western Queensland site any less significant.
He says it is a new interpretation of a track site that was excavated 30 years ago.
"It's
quite an amazing site because you have thousands of dinosaur
footprints, all or most of them heading in the one direction," he said.
"I
guess the analogy is when you go walking on the beach and you see so
many footprints of people on the beach, you think, 'Hey, did this occur
all at one time ... or at different times?'"
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