Fossils can tell scientists a lot about an animal such as their morphology, their environment, and where to place them in the tree of life. One thing though that’s very difficult to observe in the ...

Trilobites achieved their maximum genetic diversity in the Cambrian. However, unlike this diversity measure, the morphological disparity of trilobites based on cranidial outline reached the peak in ...

A study finds that animal life's "Big Bang" ended much sooner than previously thought. The sudden appearance of numerous diverse animals more than 500 million years ago, known as the Cambrian ...

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. About 465 million years ago, a now extinct arthropod called a ...

Thanks to their easily fossilized exoskeleton, trilobites largely dominate the fossil record of early complex animal life. However, trilobite appendages and the anatomy of the underside of their body ...

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 ...

Just over half a billion years ago, Earth was rocked by a global mass extinction event, a dramatic interruption of the ...

The great, car-sized predatory "shrimp" that was master of Earth's seas a half billion years ago may have been unable to eat anything harder than baby food. Several lines of evidence along with a new ...

The discovery of clasper limbs in a fossil suggests that some species of the ancient arthropods reproduced much like modern horseshoe crabs. By Jack Tamisiea The sturdy, calcite-infused exoskeletons ...