Named Tawa hallae, it provides some crucial clues to how predatory dinosaurs evolved. Since the end of the 19th century it has been known that there are two major groups of dinosaurs.

The fossils — of a new species, named Tawa hallae — back more than 200 million years, to when Earth's land masses were joined together as the supercontinent Pangaea. They retain features from ...

WASHINGTON—Newly described dinosaur fossils from New Mexico are helping scientists better understand the early development of these ancient creatures. The 6-to-12 foot-long, meat-eating creature ...

In the Dec. 11, 2009, issue of Science, a team of paleontologists presents the 213-million-year-old fossils of previously unknown carnivorous dinosaur Tawa hallae, including several of the best ...

This undated handout artist rendering provided by the National Science Foundation shows the newly discovered Triassic, carnivorous dinosaur, Tawa hallae. Newly described dinosaur fossils from New ...

Tawa hallae was a dog-sized bipedal carnivore that lived 214 million years ago in the Triassic era. ((Jorge Gonzalez)) A new raptor-like species of dinosaur found in New Mexico is providing ...

Based on T. hallae's relationship with other dinosaurs, scientists now think early ancestors of the reptiles that came to dominate the world for 200 million years first evolved in what is now ...

The 6-to-12 foot-long, meat-eating creature, Tawa hallae, is described in Friday’s edition of the journal Science. The first dinosaurs developed about 230 million years ago, and T. hallae ...

Newly described dinosaur fossils from New Mexico are helping scientists better understand the early development of these ancient creatures. The 6-to-12 foot-long, meat-eating creature, Tawa hallae ...

“This new dinosaur, Tawa hallae, changes our understanding of the relationships of early dinosaurs and provides fantastic insight into the evolution of the skeleton of the first carnivorous ...

Dec. 11 -- THURSDAY, Dec. 10 (HealthDay News) -- Fossils found in New Mexico show that early meat-eating dinosaurs crossed continents, a new study reports. Researchers found 213-million-year-old ...