.46" Ankylosaur Tooth - Hell Creek Formation, SD
Ankylosaurus and Denversaurus so it's not possible to positively identify an individual tooth like this down to a specific species or genus.
The tooth is extremely well preserved with minimal wear. Comes in an acrylic display case.
Ankylosaurs were herbivorous dinosaurs that lived during the Cretaceous and evolved complete body armor covered in plates, scutes and spikes. They wielded a massive tail club which could have been used to defensive purposes against predators such as Tyrannosaurs. Adult Ankylosaurs are believed to have reached up to 25 feet in length.