The new research is the first to look back at early mammals in full color. Using advanced fossil imaging methods and a ...

The house mouse (Mus musculus) is one of the most common mammals worldwide. It can be found in all parts of the United States ...

The order Cetacea includes marine mammals, such as whales, dolphins, and porpoises. Fossil evidence suggests that the cetaceans share a common ancestor with land-dwelling mammals that began living ...

The planet’s earliest mammals are an important part of our evolutionary ... It was first discovered over 140 years ago by paleontologist–and 1881 Popular Science profile subject–Edward ...

But marsupials remain much less common than other mammals. Opossums and other marsupials exist in North and South America, but Australia is the only continent where marsupials—and monotremes ...

Although they came into their own only after the extinction of the dinosaurs some 65 million years ago, mammals had maintained a low-profile existence for some 150 million years before that.