Spinosaurus is fascinating for two reasons: it was one of the biggest carnivorous dinosaurs that ever lived, and it had a distinctive sail on its back, the purpose of which is still a mystery. Here's where you can find some basic facts about Spinosaurus:
Profile of Spinosaurus
10 Facts About Spinosaurus
Profiles of Irritator and Suchomimus, two dinosaurs closely related to Spinosaurus
Profile of Ernst Stromer von Reichenbach, the paleontologist who discovered Spinosaurus
A gallery of Spinosaurus pictures
Spinosaurus wasn't the only oversized carnivore of the Cretaceous period. This dinosaur shared the stage with equally fierce theropods, including tyrannosaurs, ceratosaurs and allosaurs:
The Large Theropods - Allosaurs, Ceratosaurs, Megalosaurs and Abelisaurs
Tyrannosaurs - The Most Dangerous Dinosaurs
A Complete, A to Z List of Carnivorous Dinosaurs
The gigantic size of Spinosaurus, and the function of the huge sail on its back, can be explored in more detail here:
Why Were Dinosaurs So Big?
Dinosaur Metabolism - Were Dinosaurs Warm-Blooded?
Dinosaur Combat - How Dinosaurs Fought, and the Weapons they Used
