Researchers in China have discovered the fossil of a two-legged dinosaur that existed 160 million years ago and has features similar to that of birds.

Scientists unearth in China fossil of first-known dinosaur with venomous teeth

Fossils of a large Armadillo look-alike creature, that were found in Brazil in the area around modern day Sao Polo state, were unveiled at an environmental museum in Rio by researchers, on July 7, 2009.

Move over, dinosaurs. Paleontologists have discovered ancient fossils of a snake - now named Tinanoboa  Cerrejonensis - which is the biggest snake that ever lived. We are talking about a snake that was longer than 43 feet, and weighed more than a tonne. That's more weight than a car, and longer than some buses.