Edmontosaurus Tibia Bone
- Age - 67/66 Million Years Old ( Late Cretaceous )
- Bone Type - Tibia
- Discovered - Hell Creek Formation, Montana
* The Edmontosaurus *
Edmontosaurus is a genus of hadrosaurid dinosaurs. It contains two known species: Edmontosaurus regalis and Edmontosaurus annectens. Fossils of E. regalis have been found in rocks of western North America that date from the late Campanian stage of the Cretaceous Period 73 million years ago, while those of E. annectens was found in the same geographic region but in rocks dated to the end of the Maastrichtian stage of the Cretaceous, 66 million years ago. Edmontosaurus was one of the last non-avian dinosaurs and lived alongside dinosaurs like Triceratops, Tyrannosaurus, Albertosaurus, and Pachycephalosaurus shortly before the Cretaceous–Paleogene extinction event.
* Tibia *
The tibia, also known as the shinbone or shank bone, is the larger, stronger, and anterior of the two bones in the leg below the knee invertebrates, and it connects the knee with the ankle bones. The tibia is found on the medial side of the leg next to the fibula and closer to the median plane or center-line. The tibia is connected to the fibula by the interosseous membrane of the leg, forming a type of fibrous joint called a syndesmosis with very little movement. The tibia is named for the flute tibia. It is the second-largest bone in the human body next to the femur. The leg bones are the strongest long bones as they support the rest of the body.
* Late Cretaceous Era *
The Late Cretaceous is the younger of two epochs into which the Cretaceous geological period is divided in the geologic time scale. Rock strata from this epoch form the Upper Cretaceous series. The Cretaceous is named after the white limestone known as chalk which occurs widely in northern France and is seen in the white cliffs of south-eastern England, and which dates from this time.
* Hell Creek Formation *
The Hell Creek Formation is an intensively studied division of mostly Upper Cretaceous and some lower Paleocene rocks in North America, named for exposures studied along Hell Creek, near Jordan, Montana. The formation stretches over portions of Montana, North Dakota, South Dakota, and Wyoming. In Montana, the Hell Creek Formation overlies the Fox Hills Formation. The site of Pompeys Pillar National Monument is a small isolated section of the Hell Creek Formation. In 1966, the Hell Creek Fossil Area was designated as a National Natural Landmark by the National Park Service.
Edmontosaurus Tibia Bone
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