If, in an alternate timeline, T. rex never evolved elongated orbits and instead had circular ones, the dinosaur's eye would have weighed nearly 44 pounds (20 kilograms) and measured 11.8 inches ...

The newest addition to the tyrannosaur family tree is named Khankhuuluu mongoliensis, which translates to “dragon prince from ...

Tyrannosaurus rex possessed awe-inspiring bite force, with the huge meat-eating dinosaur's bone-crunching chomp estimated to pack about 8,000 pounds (3,630 kg) of might - about equal to the weight ...

The 67 million-year-old T. rex skeleton was assembled from three specimens excavated from 2008 to 2013 in the Hell Creek and Lance Creek formations in Montana and Wyoming. See photos of the ...

A reexamination of fossils found in Mongolia has revealed a previously unknown “missing link” species that led to dinosaurs like Tyrannosaurus rex.

The snout bone was hollow and the bones around the eye didn't have all the horns and bumps seen in tyrannosaurs," Zelenitsky said. "Khankhuuluu had teeth like steak knives, with serrations along ...

The 293 T. rex bones, assembled and erected into a growling 11.6-meter-long (38-foot-long) and 3.9-meter-high (12.8-foot-high) posture, are expected to fetch 5 million to 8 million Swiss francs ...

Composed of 199 bones, standing 3.6 m (11.8 ft) tall and more than 12 m (40 ft) long, Victoria is the second-largest known T-rex skeleton after Sue, the famous specimen (and prolific tweeter) that ...

The T. rex’s skull seems to have been built specifically for destroying just about anything, and based on what its fossils have told us, that’s exactly what it did. Tech. Entertainment. Science.

But bite force alone didn't explain how the T. rex could puncture or smash through bones. Their teeth also played an important role. "It is like assuming a 600-horsepower engine guarantees speed ...

This bite strength was aided in T. rex and other large predatory dinosaurs by an intriguing evolutionary modification in the skull, with the eye socket - called the orbital bone - becoming ...