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Breathing Life into Tyrannosaurus Rex

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

By Gregory M. Erickson

Dinosaurs of the Antarctic

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

By Patricia Vickers-Rich and Thomas Hewitt Rich

Fossils of the Flaming Cliffs

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

By James Clark, Malcolm C. McKenna, Mark Norell and Michael J. Novacek

Captured in Amber

The exquisitely preserved tissues of insects in amber reveal unique secrets of evolution

By David A. Grimaldi

The Terror Birds of South America

These huge, swift creatures were the dominant carnivores of the continent for millions of years, until competitors drove them into extinction

By Larry G. Marshall

The Evolution of Life on Earth

The history of life is not necessarily progressive; it is certainly not predictable. The earth's creatures have evolved through a series of contingent and fortuitous events

By Stephen Jay Gould


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