Tyrannosaurus rex Evolution Fossils Theropods Pterosaurs Stegosaurus Ceratosaurus Tyrannosaurus Rex Ankylosaurs Sauropods Tyrannosaurs Extinction Feathered Dinosaurs Behavior New Dinosaur Species Footprints Dinosaur Behavior Diet Fossil Record Dinosaur Classification Avialae Tyrannosaurus Ankylosaurids Ornithopods Dinosauria Non-avian Dinosaurs Extinction Events Iguanodontians Gorgosaurus Herbivorous Dinosaurs Cretaceous Period New Species Dietary Habits Thescelosaurus Feathers Growth Species Extinct Species Fona herzogae Evolutionary Biology Therizinosaurs Kulindadromeus Fossil Evidence Prey Ecology Oviraptorosaurs Dinosaur Species Ecosystem Gorgosaurus Libratus Citipes Feeding Strategies Tyrannosaurids Ecological Niches Fossil Research Feeding Strategy Stomach Contents Fossil Discovery Pliosaur Caenagnathids Isle of Wight Megalosaurus Tyrannosaurus genus Tyrannosaurus mcraeensis Sauropodomorphs Hell Creek Formation Caudipteryx Discovery Feeding Habits Dinosaur Locomotion Evolutionary Success Apatosaurus Dinosaur Evolution Characteristics Dinosaur Footprints Body Size Tracks Raptor Dinosaurs Distribution Megaraptor Physical Characteristics Comparison Velociraptor Skeletal Remains Stegosaurs Crocodilians Deinosuchus Megaraptora Dromaeosauridae Maleriraptor kuttyi Genetics Spicomellus afer Research Methods Cultural Representation Nonavian Dinosaurs Species Interaction Herding Behavior Neornithes Predation Kostensuchus atrox
CT scans plus bone histology show the juvenile's dome matured early, offering a rare window into how these dinosaurs grew.