1.8" Edmontosaurus Fossil Jaw Maxilla Bone Lance Creek Cretaceous Dinosaur WY COA
Location: Lance Creek Formation, Wyoming (Private Land Origin)
Weight: 0.4 Ounces
Dimensions: 1.8 Inches Long, 0.9 Inches Wide, 0.3 Inches Thick
Comes with a Certificate of Authenticity.
The item pictured is the one you will receive.
This is a genuine fossil.
Edmontosaurus, meaning "lizard from Edmonton," is a hadrosaurid dinosaur that existed during the Maastrichtian stage, the final part of the Cretaceous period, between 71 and 65 million years ago. Adult individuals often grew to about nine meters in length, while some of the larger specimens could reach up to thirteen meters. With an estimated weight of around 3.5 tonnes, Edmontosaurus is recognized as one of the largest members of the hadrosaurid family.
Edmontosaurus could pass the toughest foodstuffs back and forth across the teeth with its muscular, daring pouches.
To fit so many teeth into its mouth, they were packed into tight "banks" of up to sixty rows, and new teeth continually grew to replace lost teeth — analogous to a new shark. The bones of the higher jaw would flex outwards as the lower jaw came up, so the mandible could grind against it. Typical food would have built-in conifer needles, seeds, and twigs, and these have been established in the body cavities of fossilized Edmontosaurus. It was evidently a tree-browser.
The 1908 fossil find in Wyoming was notable for preserving skin imprints of Edmontosaurus. The skin must have dried quickly and imprinted its shape into the surrounding mud. These details reveal that the dinosaur’s skin was scaly and leathery, and that the thigh muscle lay beneath the skin, creating the impression that the leg began at the knee with the entire thigh hidden under the skin. This feature enhances its duck-like appearance. Furthermore, Edmontosaurus had numerous tubercles—small bumps—along its neck, back, and tail.
Edmontosaurus was bipedal but could surely have walked on four legs. The forelimbs are shorter than the hindlimbs, but not so much that four-legged motivation was unfeasible. The front feet also had hooves on two fingers, and weight-bearing pads like folks of Camarasaurus. The rear feet had two toes, and all were hooked. The bone arrangement in the lower limbs suggests that both the legs and feet were attached to very influential muscles. The spine curved downwards at the shoulders, so Edmontosaurus would have had a low posture and would have browsed close to the ground. Despite the power of its limbs, Edmontosaurus would only have been slow-moving and had few defensive features. To survive, it must have had keen eyesight, hearing, and smell to get an early warning of predators.