A newly described Patagonian fossil reveals the evolutionary origins and global spread of the tiny alvarezsaur dinosaurs.

A near-complete fossil from Patagonia has finally cracked open the mysterious evolutionary history of one of prehistory's strangest dinosaur groups ...

A tiny dinosaur species may be the missing link in the bird-like dinosaurs Alvarezsaurs, after the discovery of the first ...

Learn how the tiny dinosaur fossil from Patagonia reshapes alvarezsaur evolution and their unusual digging claws.

WASHINGTON, Feb 25 (Reuters) - In Argentina's Patagonia region 95 million years ago, some huge dinosaurs roamed the landscape ...

The newer, more complete specimen allowed the team to finally map the globally-distributed group's strange anatomy ...

A nearly complete 90-million-year-old dinosaur fossil from Patagonia, Alnashetri, reveals how alvarezsaurs evolved and shrank over time.

A new “apex predator” dinosaur species has been discovered based on its fossil, unearthed in Argentina with a crocodile bone stuck in its jaws. The species has been named Joaquinraptor casali, and was ...

Scientists have discovered a remarkably complete fossil of a tiny dinosaur that is helping to solve a long-standing puzzle about a strange group of prehistoric animals. The fossil, about 90 million ...

An international team of paleontologists and Earth scientists has identified fossilized remains as a two-clawed therizinosaur. The fossils were unearthed more than a decade ago in Mongolia. Their ...

The 90-million-year-old fossil of a tiny bird-like dinosaur has rewritten history, say scientists. They described the ...