Imagine a world where furry mammals scuttle under the feet of gigantic dinosaurs, not yet destined to rule the Earth. It’s a ...

Everyone knows that dinosaurs are extinct, and most people have some idea about how it might have occurred. But the exact ...

The creatures cruised the world’s oceans with features we often associate with marine mammals, such as coats of blubber and ...

Read about the Jurassic extinction event that wiped out many species at the beginning of this Period and led to the rise of ...

Reptiles first appear in the fossil record 315 million years ago and were the dominant animals during the Mesozoic era, which lasted for 270 million years until the extinction of the dinosaurs.

The animals constantly grew new shell material ... As ammonites evolved throughout the Mesozoic era, between 252 and 66 million years ago, their shell structures grew smaller, more tightly coiled ...

"Twins! She has another baby," Judith Pardo-Pérez, a paleontologist at the University of Magallanes in Chile who first discovered the fossil in 2009, told Live Science, adding that she plans to ...

It forms the transition between the late Palaeozoic Era, which was mainly populated by synapsids, or mammal-like reptiles, and the Mesozoic Era ... and killed off all the trilobites, a group of ...

With animals, whole groups disappeared ... Image courtesy of Max Pixel (CC0) When the Cretaceous Period and Mesozoic Era ended 66 million years ago, the Palaeogene Period and the Cenozoic Era began.

The truth about the platypus—and what makes the animal's recent genomic sequencing ... 166 million years ago, deep in the Mesozoic era, and since that time, it has independently lost different ...

Here, we will look at the animals that lived on the Earth during one particular geological time: the Mesozoic Era. We will look at the extinction events that took place during that era and how ...

The Jurassic Period is one of the three prehistoric geological periods of the Mesozoic Era. It spans from 145 ... the plants and animals that existed, and the extinction events that they endured.