A group of researchers has estimated how long it took Tyrannosaurus rex to reach its full size — and the time period is ...

Dinosaur bones are like trees—every year is represented by a new ring, and paleontologists can count those concentric circles ...

There is no question that Tyrannosaurus rex got big. In fact, this fearsome dinosaur may have been Earth's most massive land ...

Scientists believe they now know the true lifespan of the Tyrannosaurus rex, rewriting what was known about the ancient ...

Spinosaurus was unlike any other carnivorous dinosaur ever discovered. Larger than Tyrannosaurus rex, it hunted in rivers and wetlands across ancient North Africa. Its long snout, conical teeth, and ...

A study of fossil bones shows Tyrannosaurus rex kept growing until around age 40, challenging long-held ideas about dinosaur ...

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

A new study reveals that the Tyrannosaurus rex took up to 40 years to fully grow.

Using polarised light, the team identified previously unknown growth marks that had gone undetected in earlier studies. These ...