New Insights About Evolving Triceratops
In the latest paper to be published about findings from the Hell Creek Formation, Montana State University doctoral candidate John Scannella and three co-authors reveal new insights into the evolution of Triceratops, based on more than 50 specimens that have been collected in recent years.
Over one to two million years at the end of the Cretaceous Period, Triceratops went from having a small nasal horn and long beak to having a long nasal horn and shorter beak. The dinosaur with a small nasal horn and long beak is a Triceratops horridus. It was only found lower in the Hell Creek Formation. The dinosaur with a long nasal horn and shorter beak is a Triceratops prorsus. It was only found near the top of the Hell Creek Formation. Skulls found in the middle of the Hell Creek Formation showed characteristics of both Triceratops horridus and Triceratops prorsus.
“This study provides a detailed look at shifts in the morphology of a single dinosaur genus over time,” Scannella said.
…blue was an interesting choice.