When a Spinosaurus attacked a T. rex in Jurassic Park III, both giant carnivores tried to finish the fight with one powerful bite of their bone-crushing jaws. The Spinosaurus won, because when the movie was being made back in the early 2000s, fossil discoveries suggested it was the largest carnivorous dinosaur that ever lived. But new research provides evidence that size and weight didn’t always create a powerful bite.
“The Spinosaurus and the T. rex didn’t live at the same time at the same continent, but if they did, I don’t really see the Spinosaurus winning,” says Andre Rowe, a paleobiologist at the University of Bristol. He led a study analyzing the biomechanics of skulls belonging to the largest carnivorous dinosaurs. Based on his findings, T. rex was most likely was the apex predator we’ve always believed it to be. The story of other giant carnivorous dinosaurs, though, was a bit more complicated.
Staring down the giants
“Of the giant carnivore dinosaurs, T. rex is the one we know the most about because it has a pretty good fossil record,” Rowe says. There are many complete skulls which have already been scanned and analyzed, and this is how we know the T. rex had an extremely high bite force—one of the highest known in the animal kingdom. We have far fewer fossil records of other giant carnivores like Spinosaurus or Allosaurus, so we assumed they were similar to T. rex.
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Source: Ars Technica
