This is Lambeosaurus Lambei, the more famous species

This is Lambeosaurus Magnicristatus, which mimics a Gorgosaurus to scare off smaller predators. Other Lambeosaurus of the same herd can tell the difference from an actual Gorgosaurus based on the side patterns.

Skeletal Diagram I used: https://www.deviantart.com/getawaytrike/art/For-Lambe-of-Lambe-s-772289286

For Lambe, of Lambe's by GetAwayTrike on DeviantArt@deviantart