A study of fossil bones from four collections has revealed that a stocky build was an evolutionary advantage for a late Permian predator. Moschorhinus kitchingi is a therocephalain — a ‘beast ...

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 ...

It was the largest terrestrial predator we know of from the Permian in South America. "The animal had large, sharp, canine teeth adapted for capturing prey. Its dentition and cranial architecture ...

Dimetrodon was the largest predator of its time, preying on giant amphibians nearly 300 million years ago during the Early Permian period. "They were eating basically whatever they wanted," says ...

But did this remarkable life cycle already exist in their early days? Frog fossils are rare, and even rarer are those of tadpoles, those young amphibians vulnerable to predators and unstable aquatic ...

More than 17,000 species are known to have survived until the mega-extinction that ended the Permian period 251 million years ago. A predator of the Cambrian was the giant, shrimplike Anomalocaris ...