The Field Museum has an interesting video on Youtube. The video is a presentation by Dr. Jingmai O'Connor, who is the Associate Curator of Fossil Reptiles, on Spinosaurus.
With its crocodile-like jaws set in a skull that is 20% longer than T. rex and its large dorsal sail, Spinosaurus aegyptiacus is one of the most iconic dinosaurs. However, this species was almost lost to science when the first specimen was destroyed in WW2. Through chance, hard work, and perseverance, a second skeleton was discovered. This specimen reveals that Spinosaurus had a paddle-like tail adapted for aquatic locomotion, a first among dinosaurs. This kicked off one of the greatest controversies in recent dinosaur paleobiology. Field Museum scientists weigh in, providing rigorous quantitative data to demonstrate that Spinosaurus was indeed a subaqueous foraging predator.
