As ferocious as Tyrannosaurus rex was, it was not the largest predatory dinosaur. That honor belongs to Spinosaurus, a 50-foot killing machine with spike-shaped teeth. A giant among dinosaurs, its fossils remained a mystery, eluding paleontologists for decades. Paleontologist Nizar Ibrahim, a National Geographic 2014 Emerging Explorer, has reconstructed a complete skeleton of this prehistoric giant that was bigger than T. rex. Almost as amazing as Spinosaurus itself is the story of how this monster was rediscovered a century after its bones were first unearthed, then later bombed into oblivion in the chaos of WWII. Join Ibrahim for Spinosaurus: Lost Giant of the Cretaceous at the Broad Stage in Santa Monica.