Tropical riparian ecosystems—those found along rivers and wetlands—recovered much faster than expected following the ...

However, even the trilobites' evolution could not help the trilobites escape the Permian Period, where there was a mass extinction of animals on Earth. During the Permian Period, there was massive ...

About 250 million years ago, at the end of the Permian period, something killed some 90 percent of the planet's species. Less than 5 percent of the animal species in the seas survived. On land ...

The period of time before the Triassic was called the Permian. This was a time when a wide variety of animals lived, including a group of animals called the synapsids, which would later evolve ...

This illustration shows the percentage of marine animals that went extinct at the end of the Permian era by latitude, from the model (black line) and from the fossil record (blue dots).

Fossil evidence from North China suggests that some ecosystems may have recovered within just two million years of the ...

Among them were the chordates, to which vertebrates (animals with backbones ... survived until the mega-extinction that ended the Permian period 251 million years ago. A predator of the Cambrian ...

Nobu Tamura/Wikimedia Commons The Triassic Period (252-201 million years ago) began after Earth's worst-ever extinction event devastated life. The Permian-Triassic extinction ... a group of animals ...