Measuring 7 1/4 inches in length, this specimen is part of the mandible. The large indentations are from the impressions of the rex's teeth on the inside of the mouth. This has been confirmed by paleontologists and other experts in the field.We have posted in the past other pieces of the same animal from the same site. This fossil took us many months to confirm its identity. Extremely rare - a true collector's piece. The item "T-Rex Fossil Dinosaur Jaw Section Cretaceous, 66-68 MYO Hell Creek Form, MT" is in sale since Sunday, February 28, 2021. This item is in the category "Collectibles\Rocks, Fossils & Minerals\Fossils\Vertebrates\Amphibian, Reptile & Dinosaur". The seller is "k041_34" and is located in Sebastian, Florida. This item can be shipped worldwide.