This adds to evidence that mammals were more diverse during the age of dinosaurs than previously realised. The work is published by an international team of scientists in this week's Nature.

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 ...

Faced with an evolving group of competing organisms -- the mammals -- perhaps dinosaurs were driven to extinction by competition. Packs of small mammals would have competed with dinosaurs for food.

Analysts recently revealed that mammals living alongside dinosaurs likely developed slowly, but they had a larger lifespan than they do today. The researchers shared this opinion while studying ...

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 ...

The area of the discovery was highlighted by scientists for having great potential, since “the evolution of mammals during the Age of Dinosaurs is still very unknown and each discovery of a new ...