It’s a known fact that Tyrannosaurus rex dinosaurs have small arms — but why? Scientists now believe they have cracked the ...

A Royal Society research paper published May 20 suggests that T. rex, which averaged more than 40 feet long with arms ...

A new study has found that the T. rex's arms evolved to become smaller at the same time as its head grew to catch more prey ...

It’s massive, it’s fearsome, and it’s about to make a dent on the auction block. Come July, a Tyrannosaurus rex fossil is making its way to Sotheby’s New York, with a colossal estimate to match. The ...

The planned sale of the specimen, among the most complete T. rex skeletons discovered, shows the world’s elite will still ...

An analysis of 85 dinosaur species shows that tiny forearms in meat-eating dinosaurs were the result of an evolutionary trade ...

Why did T. rex have such tiny arms? Scientists now think it’s because its giant head became the ultimate hunting tool. Across ...

Tyrannosaurus rex's famously tiny arms may not have been an awkward evolutionary leftover after all. A new study suggests ...

One question dinosaur lovers have asked for years is what would happen if Tyrannosaurus rex and Spinosaurus ever met in ...

Nearly 300 Tyrannosaurus rex bones that were dug up from three sites in the United States and assembled into a single skeleton sold Tuesday at an auction in Switzerland for $5.3 million, below the ...