About 513 million years ago, a creature curled up like a pill bug to protect itself from predators, a recently-discovered fossil suggests. The new discovery is the oldest evidence that trilobites ...

Over 300 million years, trilobites evolved a diverse and successful array of forms while maintaining a simple, common body plan. Related Article Three vertical lobes BODY PLAN Trilobites had three ...

Enrollment in arthropods is an important defensive strategy that provides protection against predation. A – C, Enrolled Ceraurus from the Walcott-Rust Quarry. D – F, Enrolled Flexicalymene from the ...

Hundreds of millions of years before anthropogenic climate change was ever a thing, life on Earth suffered mass extinctions due to climate change brought on by natural causes. Even so, there were ...

This column is part of a series where Verge staffers post highly subjective reviews of animals. Up until now, we’ve written about animals without telling you whether they suck or rule. We are now ...

Tens of thousands of fossils later, we've found a trilobite with a full stomach. Yet it seems to be from a species that had a bizarre feeding pattern, and this particular individual may have been ...

Trilobites are one of the most common creatures found in the fossil record, but now some particularly well-preserved specimens have revealed some intriguing new details. It turns out that trilobites ...

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Trilobites may have grown in a similar fashion and reached ages that match those of extant crustaceans, a new study has found. Trilobites -- extinct marine arthropods that roamed the world's oceans ...

The “king” of the trilobites was snacking on whatever it could eat some 514 million years ago in the Cambrian era, even shelled creatures of its own species. By Rebecca Dzombak Cannibalism is common ...