Arizonasaurus was an archosaur from the Middle Triassic.

Human activity may be triggering the greatest extinction event since the asteroid impact that wiped out the dinosaurs, according to scientists. Their study, based on a review of decades of research on ...

Sharks might be the all time bullet-dodging champions. They’ve been around for about 450 million years, longer than trees, longer than the rings of Saturn, and longer than most of the other life on ...

Guryul Ravine preserves invaluable 250-million-year-old fossils from the Permian-Triassic extinction event, offering insights ...

Historical geology: the ages of life -- Sea life: marine life-forms -- Land life: terrestial life-forms -- Mass extinctions: the disappearance of species -- Causes of extinction: the forces of change ...

An artistic rendering of an evening approximately 252 million years ago during the late Permian in the Luangwa Basin of Zambia. The scene includes several saber-toothed gorgonopsians and beaked ...

A time of dying -- Extinction in the shadows -- The killing seas -- Troubled times in the Triassic -- Triassic downfall -- Pangea's final blow -- Pangea's death and the rise of resilience Summary 260 ...

A mass extinction event is a term used to describe a large-scale event that wipes out species. It is usually not a short, one-time incident but rather something that occurs over thousands or millions ...