Named after the single eye-catching crest adorning the front of its head – its name translates to "Single-Crested Lizard" – Monolophosaurus is a medium-sized carnivorous theropod, similar in size and appearance to the tyrannosaurian Proceratosaurus, that dates back to the Middle Jurassic period, more than 160 million years ago. It has a unique, flat crest extending from is snout and slightly over its eye socket along with razor-sharp teeth and claws, making it an ideal hunter. Its distinguished crest helps intensify roars and aids communication between other members of its own species. This genus is a relative of the fearsome Allosaurus, but smaller in stature at approximately five meters in length and weighing from 450kg to 680kg.