Found in the “Valley of the Dinosaurs” in the Hațeg Basin of Transylvania, the fossil was a duck-billed dinosaur called the hadrosaur, one of the most common and widespread dinos in the late Cretaceous Period.
But this is not the first time that a duck-billed dinosaur fossil has had evidence of a tumor. Other species have had different types of tumors. With this finding, researchers believe that all duck-billed dinosaur species may have been more prone to tumors than other dinosaurs.
But Bruce Rothschild, a paleopathology expert from the Northeast Ohio Medical University who studied the scans of the fossil, believes that this specific finding, the hadrosaur with ameloblastoma, shows something more.
"The discovery of an ameloblastoma in a duck-billed dinosaur documents that we have more in common with dinosaurs than previously realized," Rothschild said in a statement.
Ameloblastoma can afflict modern reptiles and mammals, as well as humans.