Rex Dinosaur Tooth Fossil Teeth Fossils. Here is a great Dinosaur tooth from the King of dinosaurs, T. This tooth is all natural. The missing tip adds character to this tooth. It was broken during feeding and remained in the dinosaurs mouth long enough to wear down the tooth before falling out.Rex tooth 1.25 inches long! The item "Worn Tyrannosaurus rex T. Rex Dinosaur Tooth Fossil Teeth Fossils" is in sale since Saturday, November 23, 2019. This item is in the category "Collectibles\Rocks, Fossils & Minerals\Fossils\Vertebrates\Amphibian, Reptile & Dinosaur". The seller is "trex-fossils" and is located in Lansing, Kansas. This item can be shipped worldwide.