From birth to adulthood, T. rex took 40 years growing into an eight-ton giant, and scientists think that long childhood helped it dominate the dinosaur world

New research reveals that Tyrannosaurus rex took 40 years to reach its massive adult size, challenging previous beliefs about ...
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T rex may have taken 40 years to become a giant

A new analysis of tyrannosaur fossils suggests Tyrannosaurus rex may have continued growing until around age 40. The finding ...
Science Daily

T. rex took 40 years to reach full size, scientists find

T. rex took 40 years to reach full size, scientists find Hidden growth rings in fossil bones reveal that T. rex likely grew for 40 years, and some famous “T. rex” fossils may belong to entirely ...
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Decades old T. rex debate ends with stunning discovery

When you look at a fossil on display, you may envision the world 66 million years ago. You might feel the earth shake beneath you as a large predator stalks the ancient floodplain. It has long, sharp ...