Prehistoric Earth is in great peril Aliens from a distant galaxy have invaded earth with a massive fleet of technologically-advanced weapons and vehicles. Their surprise attack is swift and brutal unlike anything Earth had ever seen. Is this the end for humans and dinosaurs? Seven courageous dinosaurs are all that stand in the way of the invaders and the complete destruction of Earth. How will they defend the planet against the aliens' machines and weapons? The answer may lie in a mysterious medallion that grants dinosaurs super powers. The seven must set aside their differences and unite to become... Trachanoids - Defenders of the Earth Read this exciting story of the battle of Dinosaurs Vs. Aliens