An artist's impression of a Tyrannosaurus Rex. A new study has reported that the largest such "king of the dinosaurs" might have grown 25 percent longer than previously estimated. Warpaintcobra ...

Thanks to movies like "Jurassic Park," the image of the mighty Tyrannosaurus rex looms large in the popular imagination, but is that image wrong?

The study looked at 18 million years of dinosaur fossils from four different families, including triceratops and Tyrannosaurus rex, the most common dinosaurs alive at the time.

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"The 2023 study assumed a 100% fill in dinosaurs such as T. rex, and that was certainly not the case," Caspar added. It is unknown how densely packed the neurons were in dinosaur brains, Caspar said.