Dinosaurs long dominated Earth’s land ecosystems with a multitude of forms including plant-eating giants like Argentinosaurus, meat-eating brutes like Tyrannosaurus and weirdos like Therizinosaurus, ...

As white Americans moved further westward into the Nebraska territory after the Civil War, they kept fashioning a new ...

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 ...

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 evolution of mammals has been marked by significant events, such as the mass extinction that wiped out non-avian ...

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.

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.

By contrast, dinosaurs always held up their own weight.' African savanna elephants, Loxodonta africana, are the largest land animals alive today. Most weigh five to seven tonnes. The biggest ...

A new fossil exhibit will soon be available for viewing at the Sioux City Public Museum. The exhibit fill feature classic ...

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.

How did mammals come to dominate our planet? Prof Steve Brusatte tells Jim Al-Khalili about his life and work studying dinosaurs, mammals and ancient reptiles.

France’s varied geology makes it fertile ground for dinosaur fossil hunters, but many finds have only been unearthed in the ...