Dominant Dinosaur That Lived Before T. rex Discovered - Field Museum

Daspletosaurus - Wikipedia

Dinosaur Basics, Science Trek

Mini-T. rex fossil found in China

Science Lab - Discover the Tyrannosaurus - Dino Safari Park

Máximo the Titanosaur - Field Museum

Cretaceous Dinosaurs - Fossils and Paleontology (U.S. National Park Service)

Radioactive dinosaur skull helped researchers make new discovery

Large-as-Life Dinosaurs Frighten and Fascinate at 'Jurassic World', Chicago News

King' Dinosaur Before T-Rex Discovered in Uzbekistan

T. rex ancestor had an S-shaped brain, fossil reveals