- It took 35 years for T. rex to become fully grown CNN
- T. rex Bones Reveal These Dinosaurs May Have Lived Far Longer Than We Thought Scientific American
- Study finds Tyrannosaurus rex did not reach full size until age 40 Reuters
- Tyrannosaurids Took Their Time Growing to 17,000 Pounds Yahoo
- T. rex took 40 years to become fully grown New Scientist
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