Diplodocus was one of the longest dinosaurs of the Late Jurassic. But its most unusual feature may have been its extremely ...

It may have been suicidal for a predator to go after a healthy adult Brachiosaurus, a behemoth weighing perhaps 60 tons that was a member of the long-necked group of dinosaurs called sauropods that ...

B U E N O S   A I R E S, Argentina, Feb. 23 -- An Argentine paleontologist claims to have unearthed remains ofthe world's largest dinosaur in the latest find to show thenation's richness in bones ...

TAMPA, Florida — About 150 million years ago, a giant, long-necked dinosaur stomped on the ground in the Midwestern US state of Wyoming and left behind what researchers said on Tuesday is the largest ...

We know the main reason that the age of the dinosaurs came to an end: an asteroid impact on the Yucatán Peninsula some 66 million years ago. But how the dinosaurs’ reign began is far less clear—and ...