AI Insight
Approximately 252 million years ago, the Permian Period ended with a mass extinction event that eliminated a large proportion of Earth's species. Following this extinction, archosauromorphs—a group of reptiles that would eventually give rise to dinosaurs and crocodiles—experienced significant proliferation and diversification. This new analysis reconstructs the evolutionary emergence and early radiation of these reptile groups during the recovery period after the mass extinction.
Why it matters
Understanding how major animal groups like dinosaurs emerged and diversified after catastrophic extinction events provides insight into evolutionary recovery processes and ecosystem reorganization. This research helps clarify the timing and conditions that allowed archosauromorphs to become dominant terrestrial vertebrates for the subsequent 185 million years.
Understand the Science
About 252 million years ago, at the end of the Permian Period, a large proportion of species on Earth rapidly became extinct. After this mass extinction, many groups of organisms began to recover, while reptiles known as archosauromorphs—the group that includes dinosaurs and crocodiles—proliferated.
Source: New analysis reconstructs the dawn of dinosaurs and other reptiles