In the never-ending battle between cat and dog owners, one factoid can't be denied: cats are terrible at helping take down big game. But mammoth kill sites in Europe that containing lots of…

Where did the earliest Americans come from?  Speculation has pointed to Eastern Asia, Western Asia, Japan, Beringia and even Europe. Differences in cranial form between today's Native Americans…

Deep in the water of a Yucatán Peninsula cave, one of the oldest human skeletons found in North America has been discovered.  "Naia" is the the researchers' name for the teenage girl who went…

An ancient kitten-sized predator is one of the smallest species reported in the extinct order Sparassodonta, which were carnivorous marsupials (metatherian mammals, anyway) native to South America…

Researchers have discovered a new fossil organism from the Ediacara Biota, a group of organisms that occurred in the Ediacaran period of geologic time. Named Plexus ricei and resembling a curving…

Scientists have discovered a new species of long-snouted tyrannosaur, nicknamed Pinocchio rex, which stalked the Earth more than 66 million years ago. The dinosaur, officially named Qianzhousaurus…

Synchrotron-imaging techniques have shed new light, literally, on the healing process that took place when dinosaurs were still alive.  They examined the cracks, fractures and breaks in the…

The La Brea Tar Pits in California are known for saber-toothed cats and mastodons but they also have insects. Recent examination of fossil leafcutter bee nest cells, led by Anna Holden of Natural…

Somewhere around 180 million years ago, during the Jurassic period, the southern Swedish county of Skåne was a tropical paradise populated by dinosaurs and volcanoes. One sudden volcanic…

Genetic analysis of ancient poop found off the coast of Mexico suggests bighorn sheep may be native to Tiburón Island, the largest island in the Gulf of California and Mexico. Bighorn sheep were not…