The crisis for marine animals would have started when toxic levels of CO2 entered the shallows. Fish would have grown lethargic and slowly fallen asleep. "Perhaps the Permian ended with a whimper ...

Beneath the soil of Majorca, a treasure from the Permian era has emerged ... ruled as apex predators. These animals, neither fully mammals nor fully reptiles, exhibited a unique anatomy.

Bookended by extinctions, this era saw huge shifts in the diversity and dominance of life on Earth, ushering in the appearance of many well-known groups of animals that would go ... event devastated ...

For millions of years after the end-Permian mass extinction, the same few marine survivor species show up as fossils all over the planet. A new study reveals what drove this global biological ...

3 min read The Cambrian period, part of the Paleozoic era, produced the most intense ... Among them were the chordates, to which vertebrates (animals with backbones) such as humans belong.