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

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

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

The findings suggest T. rex spent much of its life as a juvenile or subadult, growing quickly in some years and barely at all ...

Newtonsaurus cambrensis is very large, larger than most, if not all, contemporary predators. For a therapod dinosaur from the Triassic era to be so large is essentially unprecedented. Scientists in ...

When you think of the largest carnivorous dinosaurs, you might picture a massive predator biting through bone in one devastating snap. That image fits Tyrannosaurus rex, but new research shows it ...

Cara Tabachnick is a news editor at CBSNews.com. Cara began her career on the crime beat at Newsday. She has written for Marie Claire, The Washington Post and The Wall Street Journal. She reports on ...