Edmontosaurus was a large herbivore (plant-eater) that lived in western
North America during the late
during the Cretaceous period,
about 73 and 65 million years ago, It is believed to have been one of
the dinosaurs that died out in the Cretaceous-Tertiary
65 million years ago.
Edmontosaurus was typically about 30 feet (9 meters) long. Some animals however
grew larger, and the largest may have been as long as 43 feet (13 meters). It
probably weighed around 4 tons.
"Edmontosaurus" means "Edmonton lizard" It was named (by Lawrence Lambe in 1917) after the Edmonton in Alberta, Canada, as it was first found in this region in the Horseshoe Canyon Formation.
Edmontosaurus was a member of the Ornithischia ("bird-hipped") order of dinosaurs. What this means, is that although Edmontosaurus was not closely related to birds, it did have similarly shaped pelvic bones.
Edmontosaurus was a Hadrosaur (usually known as "duck-billed dinosaur") - a member of a group of related herbivorous (plant-eating) dinosaurs that were very successful in the Cretaceous period.
Edmontosaurus lived between about 73 million years ago and 65 million years ago, during the late Cretaceous period.
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