Unearth the nine massive prehistoric animals that lived before dinosaurs ... The Dimetrodon lived during the early Permian Period, and while it looks reptilian, it’s not related to dinosaurs.

Here are seven examples of animals that lived before the dinosaurs. The dimetrodon was a large reptile-like animal that lived during the early Permian period, about 40 million years before the ...

and roamed the forests of the Carboniferous period 358-298 million years ago before dying out in the early Permian. But what would happen if there were no constraints on the size of animals ...

Dinosaurs were the most numerous animals during the Cretaceous period. Among them ... killing 75% of ocean creatures Permian-Triassic extinction 253 million years ago: Volcanism killed 96% ...

The strength of Earth’s magnetic field seems to rise and fall hand-in-hand with the abundance of oxygen in its atmosphere, a ...

Surprising new fossil evidence undermines the idea that there was ever a mass extinction on land – and may force us to ...

Despite Earth's most devastating mass extinction wiping out over 80% of marine life and half of land species, a group of ...

plants and terrestrial and complex creatures such as animals that may have looked like dinosaurs but actually predated the dinosaurs,” he said. “The Permian was the last period of the ...

Therapsids, the ancient relatives of mammals, once roamed Earth in great numbers during the middle to late Permian period ... ranging group of four-legged animals, with only mammals surviving ...

“These were predatory animals that fed on fishes and other ... of body sizes that they did during the earlier days of the Permian period. Some of the temnospondyls were small and fed on insects ...

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 ...

Known as the Great Dying, the mass extinction that ended the Permian geological period was the worst of ... and there weren’t many plants or animals that could do that.” A key reason the ...