Parasaurolophus Walkeri T-Shirt

Parasaurolophus (or “near crested lizard”) was a hadrosaur, or duck billed dinosaur that lived in North America and Asia during the Late Cretaceous Period, roughly 76.5–73 million years ago. They traveled in large herds and bore a large crest on their heads that scientists believed served a dual purpose with both a species recognition symbol and as an acoustic resonance chamber. The hollow sections of the crest likely allowed them to let out range of loud noises to signal many things like sounding a warning for the rest of the herd to know that a predator is near by and to attract mates.