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Tyrannosaurus rex

T. Rex Reached Full Size Around 40 Years, New Study Finds

New microscopy with a composite model reveals a slower, prolonged growth trajectory.

Study Finds T. Rex Reached Full Size at 35–40, Reshaping Its Life History

New Study Finds T. Rex Reached Full Size Around Age 40

Hyoid-Bone Study Confirms Nanotyrannus Was Its Own Tyrannosaur Species

Adult Nanotyrannus Identified in 'Dueling Dinosaurs' Fossil, Forcing Rethink of T. Rex Growth

Nature Study Confirms Adult Nanotyrannus in 'Dueling Dinosaurs,' Upending T. rex Growth Models