Saurolophus was a herbivore (plant-eater) that lived
in North America and Asia,
during the late
Cretaceous period,
about 74 to 70 million years ago.
It is named for the crest on its head: Saurolophus means
"crested lizard", and was first described by
Barnum Brown
in
1912.
North American examples were about 30 feet (9.1 meters) long,
whereas in Asia, it grew up to 39 feet (11.9 meters).
Like other duckbilled dinosaurs, Saurolophus is believed to have lived in
herds.
The crest on its head was hollow, and connected to the nasal passages,
and thus could have been used to make sounds.
Saurolophus could use these sounds to communicate within its herds, for
example to warn of approaching predators.
"Saurolophus" means "crested lizard". This name was chosen by Barnum Brown in 1912.
Saurolophus was a member of the Ornithischia ("bird-hipped") order of dinosaurs. What this means, is that although Saurolophus was not closely related to birds, it did have similarly shaped pelvic bones.
Saurolophus 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.
Saurolophus lived between about 74 million years ago and 70 million years ago, during the late Cretaceous period.
Saurolophus lived in North America and Asia.
Saurolophus was a herbivore (plant-eater).
North American species of Saurolophus were about 30 feet (9.1 meters) long, whereas Asian species were about 39 feet (11.9 meters) long.
Saurolophus weighed about 2 tons.
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