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EDMONTOSAURUS "Edmonton [Rock Formation] lizard" |
Edmontosaurus had leathery skin (as determined from two mummified Edmontosaurus fossils found in Wyoming). It may have had loose skin around its nose area - some paleontologists think that it may have been able to blow up this skin like a balloon, perhaps for mating rituals or intra-species rivalry. It had a series of bumps (tubercles) running along its neck, back, and tail.
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INTELLIGENCE
Edmontosaurus was an ornithopod, whose intelligence (as measured by its relative brain to body weight, or EQ) was midway among the dinosaurs.
Edmontosaurus herds may have migrated thousands of miles seasonally, traveling from the North Slope of Alaska (which would have been dark for months at a time during winter, making plants scarce) to Alberta, Canada (which was rich in green plants during winter). Large numbers of Edmontosaurus fossils have been found at both ends of this proposed migratory route.
DIET
Edmontosaurus was an herbivore, a plant eater. Fossilized conifer needles have been found in Edmontosaurus' stomach. It ate conifer needles, twigs, seeds, and other plant material with its tough beak. It had no teeth in its beak, but had hundreds of cheek teeth used for grinding up tough plant material.
ENEMIES
The almost defenseless Edmontosaurus was preyed upon by Tyrannosaurus rex. T. rex may have even followed Edmontosaurus' migration routes in search of a series of good meals. Other predators of Edmontosaurus may have included Albertosaurus,
LOCOMOTION
A Hadrosaur footprint. |
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