Shelled sea creatures were relatively free of predators 250 million years ago. But geological scientists have discovered a tiny ancient brachiopod that was drilled by predators at rates similar to ...

For the first time, researchers have assembled a comprehensive record of sea level variations during the Paleozoic Era, producing a nearly-300-million–year timeline that more than doubles previous ...

The Paleozoic era began 530 million years ago when the Earth woke up from an ice age. This era lasted for 289 million years, ...

Thallium isotopes show O2 levels rose and fell at the ocean floor long after marine animals appeared and diversified half billion years ago, according to study of ancient marine sediments exposed by ...

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...

Around 250 million years ago animals in the seas began to diversify with gusto. Remarkably, the evolution of minute plants known as phytoplankton probably powered that dramatic explosion If you could ...

The Nature Index 2024 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...

Millions of years ago, something remarkable happened in Earth’s oceans. Marine animals began to live in deeper parts of the sea, where life had not been possible before. New research shows that this ...