What scientific avenue, if researched, could offer insights into the growth rate of the Xenoceratops frill structure?

Research into the bone histology—the microscopic structure of the bone itself

To gain finer details about the developmental speed of the massive frill of Xenoceratops, researchers would need to investigate its bone histology. Histology involves studying the microscopic structure of the bone tissue. By examining how fast or slowly the bone cells grew and mineralized, scientists could infer the animal's growth rate and potentially calculate the relative speed with which that heavy, specialized frill structure developed throughout its lifespan. Such information would be valuable when comparing its development to that of better-studied relatives, such as Styracosaurus, providing a metric for evolutionary pacing.