The mostly flightless, meat-eating dinosaur descendents were the size of dogs at their smallest, but the largest known ...

“It’s a large mammal by Late Cretaceous standards (with an estimated body mass similar to today’s muskrat), whereas most mammals living at this time (70 – 75 million years ago) were mouse ...

A nearly 100 million-year-old firefly fossilized in amber sheds light on how the bioluminescent insects evolved during the ...

Fossil of an extinct Phorusrhacid "terror bird" in the Tatacoa Desert reveals insights into ancient predators and ecosystems.

A massive environmental calamity rocked the ancient Mediterranean. It took millions of years for the ecosystem to recover.

A recent study by Harvard reveals that the evolutionary transition to an upright posture in mammals was complex and occurred ...

As the Earth faces unprecedented climate change, a look into the planet's deep past may provide vital insights into what may ...

In a recent study, paleontologists announced their discovery of an ancient mammal that lived around 70-75 million years ago ...

Crocodiles are impressively large reptiles. A male American crocodile can measure as much as 20 feet (6.1 meters) long, ...

It belonged to oversize hoofed mammals like toxodonts, distant relatives of today’s rhinoceroses and tapirs; tall crocodiles ...

It includes profiles and illustrations of prehistoric mammals such as Livyatan melvillei, a large predatory whale from the Miocene epoch. After the extinction of dinosaurs came the age of mammals.

The Case Against Marine Mammals in Captivity was first produced in 1995 as a comprehensive resource for the public, the media, scientists, students, and policymakers to learn the various arguments ...