For decades, scientists have been counting annual growth rings—similar to tree rings—inside fossilized leg bones of ...

An analysis of growth rings in the leg bones of 17 Tyrannosaurus rex individuals reveals that the dinosaurs matured much more ...

Previous studies of T. rex growth rings concluded they grew until around the age of 25, and then stopped. This was more of a ...

By cutting into a tiny throat bone, Princeton's Chris Griffin showed that it belonged to an adult of a smaller tyrannosauroid ...

The famed Tyrannosaurus rex may have evolved in a very different location from its direct ancestors, new research finds. The new study builds on earlier research, which suggested that T. rex's ...

Tyrannosaurus rex is still the biggest, baddest land predator of all time. It was the size of a city bus, with a head almost as long as Tom Cruise is tall and a smile every bit as devastating.

Almost everyone has heard of Tyrannosaurus rex, but how much do you actually know about this iconic dinosaur predator? Take ...

SUE the T. rex will make a third appearance at Liberty Science Center starting Saturday, bringing “the world’s most complete and best-preserved Tyrannosaurus rex specimen” back to Jersey City. The ...

Science news this week: Solar revelations as irradiated Comet 3I/ATLAS rapidly brightens, a tiny tyrannosaur prompts T. rex rethink, and the unexpected perks of cussing out your chatbot News By Ben ...