Jaxartosaurus, which means “Jaxartes Lizard” after the Syr Darya’s early name, is a genus that contains hadrosaurid dinosaurs similar to Corythosaurus. It lived in the Late Cretaceous. Its fossils were discovered in Kazakhstan.

I. Reid, CC0, via Wikimedia Commons

Jaxartosaurus had large crests that it could have used to identify itself visually or to communicate with other members of the same species. This is in line with other lambeosaurines. They likely grazed on low-lying plants as herbivores.

Source: Wikipedia