Fossilized dinosaur footprints found in an ancient lake bed show that some predatory species could run as fast as Usain Bolt
A new look at fossilized footprints made millions of years ago in a muddy lake bed in northern Spain shows that some meat-eating dinosaurs were agile sprinters capable of running at speeds of up to 28 miles an hour.
Spanish paleontologists reported discovering the prints in two trackways near the village of Igea in the Spanish province of La Rioja in 1985. Mr. Navarro-Lorbés’s group recently found additional footprints in the area, bringing the total number of footprints in the two trackways to 12. One trackway now consists of five prints, the other seven.Does this discovery change the way you thought about how dinosaurs moved? Join the conversation below.
But the hip-height estimates, and thus the calculated speeds, may be a bit off because the prints vary in size by up to 3 inches, said Jens Lallensack, a paleontologist at Liverpool John Moores University in England. Tyrannosaurus rex, however, was a late Cretaceous theropod and didn’t overlap with the La Rioja track makers.
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