Proceratosaurus is a small tyrannosauroid theropod that lived about 166 MYA, Jurassic period in what would be present day Europe. It lived alongside Megalosaurus, Cetiosaurus, Streptospondylus and other middle Jurassic dinosaurs. Proceratosaurus means āBefore Horned Lizardā after Ceratosaurus āHorned Lizardā because itās crests resembled of that of Ceratosaurus. As of yet Proceratosaurus made two appearances in screen, in Jurassic Park the DNA of the Proceratosaurus is seen alongside other Dino DNA in the freezer room. In the documentary āDinosaur Britainā it made a minor appearance.