The California Academy of Sciences’ exhibit opening Saturday has an intriguing title: “Extreme Mammals.” Upon reading the show’s lengthy subtitle, it will become clear that it’s not about teenagers ...

Small mammals that lived around 125 million years ago may have preyed on dinosaurs three times their size, a strange fossil unearthed in China suggests. Now, Jordan Mallon at the Canadian Museum of ...

An incredible fossil depicts an ancient mammal locked in a battle to the death with a dinosaur — a snapshot of the prehistoric past so incredible that researchers carried out additional studies to ...