History ❯ Earth History

Mass Extinctions

End-Permian Extinction Cretaceous Period Cretaceous-Paleogene Extinction Permian Extinction Permian-Triassic Extinction Devonian Extinction End-Triassic Extinction Chicxulub Impact Sinsk Event Ordovician-Silurian Extinction Triassic Extinction Triassic Period Permian-Triassic

Fungal Surges Found Around Dinosaur‑Era Extinction in North America

Evidence of separate pre‑impact, impact and early Paleocene blooms shows layered ecological stress that clouds understanding of recovery.

First Confirmed Egg From a Mammal Ancestor Found in 250-Million-Year-Old Fossil

First Mammal-Ancestor Egg Found Confirms Lystrosaurus Laid Eggs

Reanalysis of Lost WA Fossils Splits Iconic Triassic Amphibian Into Two Species

Paleontologists Describe North America’s Oldest Pterosaur From Arizona Bonebed