claim: The Tracey Fragments played at the 2007 Toronto International Film Festival.
evidence: Denticles , also called serrations , are small bumps on a tooth that serve to give the tooth a serrated edge .. tooth. tooth. serrated. serration. In paleontology , denticle characteristics such as size and density -LRB- denticles per unit distance -RRB- are used to describe and classify fossilized teeth , especially those of dinosaurs .. paleontology. paleontology. Denticles are also present on the teeth of varanoid lizards , sharks , and mammals .. varanoid lizards. Varanoidea