The Diplodocus was a dinosaur, specifically a plant-eating sauropod, with eating habits that scientists have had difficulty understanding for over 100 years.

Researchers discovered that the initial speculation that the dinosaur stripped bark off trees was incorrect; instead they stripped leaves off of branches.

This was determined by creating a 3D computer model of the dinosaur’s skull, which showed that the bark-stripping method would have stressed and strained the dinosaur’s teeth and skull.

For more on this discovery, visit Live Science.