The robust D shaped cross section at the root base, the location and slant of the serrations both sides, both seem Trex to me. The tooth also happens to have the best color Ive ever seen on a Dino tooth. And theres no damage aside from the natural wear facets. A seriously cool tooth regardless of classification.The item "Juvenile T-Rex Dinosaur Fossil Tooth Possible Nano Hells Creek All Natural 1.75" is in sale since Saturday, April 27, 2019. This item is in the category "Collectibles\Rocks, Fossils & Minerals\Fossils\Vertebrates\Amphibian, Reptile & Dinosaur". The seller is "thefossilgallery" and is located in Pompano Beach, Florida. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, Sweden, South Korea, Indonesia, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Mexico, New Zealand, Singapore, Norway, Saudi arabia, United arab emirates, Bahrain, Croatia, Malaysia, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Gibraltar, Cambodia, Luxembourg, Paraguay, Uruguay.