SA Special Editions

Lines and other structures in dinosaur bones reveal how these animals grew and how long they lived

The long-necked dinosaurs known as sauropods, once seen as icons of extinction, thrived for millions of years around the world

The American West once harbored multiple communities of dinosaurs simultaneously—a revelation that has scientists scrambling to understand how the land could have supported so many behemoths

The world's fourth-largest island divulges fossils that could revolutionize scientific views on the origins of dinosaurs and mammals

Paleontologists brave wildfires, parasites and scorching temperatures in search of ancient mammal fossils

By analyzing previously overlooked fossils and by taking a second look at some old finds, paleontologists are providing the first glimpses of the actual behavior of the tyrannosaurs

Their excellent night vision and apparent warm blood raise a question: Could they have survived icehouse conditions at the end of the Cretaceous period?

Some 70 million years ago a group of hardy dinosaurs thrived in the harsh climate of what is now Alaska

The case was cold, but critical clues pointed to a killer's identity in ancient Madagascar

Modern birds, long thought to have arisen only after the dinosaurs perished, turn out to have lived alongside them

A long-cherished view of how and why feathers evolved has now been overturned

A maverick aristocrat's ideas about dinosaur evolution turn out to have been decades ahead of their time

Mongolia's Gobi Desert contains one of the richest assemblages of dinosaur remains ever found. Paleontologists are uncovering much of the region's history

On a trip to the Gobi Desert, a team of fossil hunters unearths a death scene that reveals new clues about how dinosaurs lived

Mounting evidence from dinosaur bones shows that, contrary to common belief, organic materials can sometimes survive in fossils for millions of years

Yesterday's big reptiles can help us figure out how the human era is shaping up By Mary H. Schweitzer