Sometimes, nature delivers a surprise that feels almost miraculous. Scientists have confirmed that two small marsupial species — the pygmy long-fingered possum and the ring-tailed glider — are still ...

• 13 million years ago, a medium-sized monkey known for guarding its territory among the treetops with a fearsome “howl” started doing something new. This monkey, one of the oldest known ancestors of ...

University of Chicago professor Paul Sereno led several expeditions to Niger that culminated in the discovery of Spinosaurus mirabilis, the first evidence of a new species of the Spinosaurus genus in ...

A nearly complete dinosaur skeleton discovered in Patagonia is helping scientists crack the mystery of alvarezsaurs, a bizarre group of bird-like dinosaurs. The fossil of Alnashetri cerropoliciensis ...