Mammals have existed for 170-225 million years and some ancient mammals that lived alongside dinosaurs were called ...

Before the asteroid hit, Steve described mammals as “staying and diversifying in the shadows” while dinosaurs “eventually took over from the crocodiles, got bigger and spread around the ...

The fight scene, preserved in a fossil discovered in China, suggests that small mammals preyed on the dinosaurs that ruled Earth during the Cretaceous period more than previously thought ...

After the extinction of dinosaurs came the age of mammals. A new book brings readers into this world with well-researched ...

The paper, by Gregory Erickson at Florida State University in Tallahassee, Fla., and colleagues was titled, "Complex Dental Structure and Wear Biomechanics in Hadrosaurid Dinosaurs." ...

The paper, by Gregory Erickson at Florida State University in Tallahassee, Fla., and colleagues was titled, "Complex Dental Structure and Wear Biomechanics in Hadrosaurid Dinosaurs." ...

ONO, Fukui Prefecture--A mammal fossil unearthed from a geological formation here is 127 million years old and dates from the early Cretaceous Period, when dinosaurs dominated the Earth ...

While modern small mammals live as little as a year, one of the first to roam the earth, alongside dinosaurs, could reach seven years and beyond, scientists have discovered. Only a handful of ...