Researchers in Mongolia's Gobi Desert have discovered a unique two-clawed dinosaur species, Duonychus tsogtbaatari, from the Late Cretaceous period. Unlike other therizinosaurs which had three ...

A rare fossil unearthed in Mongolia's Gobi Desert has led to the identification of a new dinosaur species Duonychus tsogtbaatari. Dinosaurs from the Cretaceous. A biological rule that lasted ...

What other dinosaur fossils have been found in Big Bend? More than 90 dinosaur species have been found at Big Bend, according to the National Park Service. Some of the fossils could not be matched ...