6.2" Edmontosaurus Fossil Ischium Lance Creek FM Cretaceous Dinosaur WY COA
Location: Lance Creek Formation, Wyoming (Private Land Origin)
Weight: 9.6 Ounces
Fossil Dimensions: 6.2 Inches Long, 2.3 Inches Wide, 1.4 Inches Thick
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Edmontosaurus was a duck-billed hadrosaurid dinosaur from the Late Cretaceous Maastrichtian stage, about 71–65 million years ago in North America. Adults measured up to nine meters, with some reaching thirteen meters, and weighed roughly 3.5 tonnes, ranking it among the largest herbivorous dinosaurs.
Its jaw contained sixty rows of teeth, constantly replaced, allowing it to process tough vegetation efficiently. Muscular cheek pouches moved food back and forth across its teeth, enabling Edmontosaurus to feed on conifer needles, twigs, and seeds. Fossils also show scaly skin impressions and tubercles, giving it a distinct duck-like look.
Edmontosaurus was primarily bipedal but could move on all fours. Its forelimbs had hooved fingers and pads for support, while hind limbs had strong muscles for locomotion. A downward-tilted spine allowed feeding close to the ground. Although slow, its keen senses helped detect predators in its ecosystem.