The Paleozoic Era, which ran from 541 million to 251.9 million years ago, was a time of great change on Earth. The era began with the breakup of one supercontinent and the formation of another. Plants ...

The dinosaurs first appeared on Planet Earth around two hundred and forty five million years ago. That's a staggeringly long ...

Throughout most of Earth's geological history, its paleoclimate has remained hospitable to life—largely thanks to continental ...

Imagine a giant millipede crawling along the jungle floor with a leggy, eight-foot-long body. Next, consider an oversized dragonfly that can stretch its wings to an incredible 28 inches across. This ...

Surprising new research shows that, contrary to conventional belief, remains of chitin-protein complex -- structural materials containing protein and polysaccharide -- are present in abundance in ...

Biophysical modeling and morphologic data from the fossil record were used to investigate the functional significance of changes in thallus morphology during the early evolutionary history of ...

In what likely is the first study on the evolution of dietary preferences across the animal kingdom, researchers report several unexpected discoveries, including that the first animal likely was a ...

For this reading guide, we're just looking at the sections of the chapters about rocks. The topic guide on Paleozoic Life picks up the sections of the chapters on critters. The topic guide organizes ...

Imagine stepping back in time to a world where the landscapes were still young, and creatures unlike any you’ve seen today ...

Representatives of several genera of late Paleozoic Caenogastropoda have been studied based on exceptionally well-preserved material from the latest Permian of south China, the Pennsylvanian of the ...