AI Insight
A new analysis of 17 Tyrannosaurus rex fossils reveals that these giant predators took approximately 40 years to reach their full adult size of about eight tons. This finding extends previous growth timeline estimates by 15 years, indicating that T. rex had a significantly slower growth rate than scientists previously believed.
Why it matters
This discovery changes our understanding of tyrannosaur life history and development patterns. The extended growth period has implications for estimating population dynamics, reproductive strategies, and ecological roles of these apex predators in Cretaceous ecosystems.
Understand the Science
Tyrannosaurus rex may have been a much slower grower than scientists realized. A new study of 17 tyrannosaur fossils found that the giant predator likely took about 40 years to reach its full size of roughly eight tons, extending previous estimates by 15 years.
Source: T. rex took 40 years to reach full size, scientists find