By cutting into dinosaur bones and analyzing the growth lines, a team of researchers discovered that T. rex and its closest relatives got big thanks to a huge growth spurt in adolescence, while ...

The tyrannosaurus rex (T-rex) was one of the biggest meat-eating dinosaurs of all time, frequently measuring up to 42 feet (12.8 metres) in length fr ...

Researchers think they understand how some dinosaurs grew so large. NPR's Eyder Peralta talks with Michael D'Emic, paleontologist at Adelphi University.

The study, published in today's issue of the journal Science, is the first to chart dinosaur survival rates and delve into the biology of the beasts, a co-author of the article said.

How did dinosaurs grow so big? By starting early, suggest paleontologists reporting Wednesday on the discovery of 190-million-year-old fossilized dinosaur eggshells and bones, among the oldest ...

The dinosaur also featured large, upward-growing spikes over its hips, an array of blade-like spikes down its torso, and ...

Researchers think they understand how some dinosaurs grew so large. NPR's Eyder Peralta talks with Michael D'Emic, paleontologist at Adelphi University.