<p><br /> The fossilised remains of a hitherto unknown dinosaur have been unveiled by palaeontologists in Spain.<br /> </p><p><br /> The 20-foot-long, two-footed dinosaur dates from around 125 million years ago and is the earliest member yet discovered of a branch of Carcharodontosauria, the largest predatory dinosaur known to scientists.<br /> </p><p><br /> The discovery was reported in Thursday's issue of the journal Nature.<br /> </p><p><br /> The fossil, which scientists say is the most complete skeleton of a meat-eater yet, was discovered in the Las Hoyas formation in Cuenca province in central Spain.<br /> </p><p><br /> The area has surrendered significant finds dating back to the Lower Cretaceous period of between 120 and 150 (m) million years ago.<br /> </p><p><br /> The newly-discovered dinosaur, which is characterised by a hump on its back is thought to be the forerunner of flesh-eating leviathans which once ruled the planet.<br /> </p><p><br /> Scientists believe the hump on the dinosaur's back, which was at least 16 inches tall, may have been used to help this meat-eating theropod communicate among its own species.<br /> </p>