The 90 million-year-old fossil in Río Negro province, Argentina revealed a species of bird-eating dinosaur that is only 1.5 meters long.
Paleontologists have discovered an unknown hairy dinosaur that lived 67 million years ago in the southwestern United States.
Flying dinosaurs that once inhabited Jurassic have many characteristics similar to modern birds.
By inhibiting the expression of a gene in modern chickens, scientists created a pair of legs-like chickens with its ancestral dinosaurs.
Scientists recently claimed to have found the fossil of a feather dinosaur dating back 160 million years, the world's oldest.
From fossils, US scientists say they have discovered a small North American dinosaur quite similar to birds and has a similar way of hatching birds.