Add Yahoo as a preferred source to see more of our stories on Google. An Olorotitan dinosaur fossil with fractured tail vertebrae has resurrected a theory around how dinosaurs mated. Stocktrek Images, ...

Whatever happened to the duck-billed dinosaur, it was a real pain in the butt. Many of the spines sitting atop the animal’s tail vertebrae had been fractured. The dinosaur, known as Olorotitan to ...