Edmontosaurus was a large hadrosaur (duck-billed dinosaur) that lived in the western regions of North America. Its name is derived from the location where it was found – Edmonton, in southern Alberta, Canada. It was a known prey of Tyrannosaurs, and unlike other hadrosaurs lacked the head crests.
Discovery
The first identified species of fossil was discovered in 1892, in the Lance Formation of Niobrara County in Wyoming. It wasn't until the 1920s that they were correctly identified as a new genus.
Paleoecology
Edmontosaurus existed over a wide range and for a long period of time (even by dinosaur standards!). They typically lived in wet conditions with plentiful vegetation, with a humid or tropical climate.
