Not all two-legged dinosaurs were like the lumbering Tyrannosaurus rex.
In this October 2020 photo provided by Alberto Labrador, a researcher measures a 120 million year-old fossilized dinosaur footprint the in the La Rioja region in northern Spain, while doing research about dinosaur running speeds. Scientists discovered one of the quickest sets of theropod tracks in the world through this research.
These tracks join the ranks of other speedy sets found in Utah and Texas, one of which shows dinosaurs running at speeds over 30 mph. The Spanish footprints showed speeds of nearly 28 mph. All of the fastest known sets of prints come from a family of dinosaurs called theropods. These carnivorous dinosaurs stood on two legs and could not fly, like the famed velociraptor. The animals that created the most recent impressions were probably 5 to 6 1/2 feet tall and 13 to 16 feet long from mouth to tail, the researchers estimated.
“Behavior is something very difficult to study in dinosaurs,” said lead author Pablo Navarro-Lorbés of the University of La Rioja. “These kind of findings are very important, I think, for improving that kind of knowledge.”
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