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 ...

Paleontologists studying rocks from Morocco have unearthed the most exquisitely preserved trilobite fossils yet discovered. The new lifelike fossils update our understanding of the evolution and ...

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Of the incredible creatures that once dominated the Earth, it is the larger, terrestrial animals that get the most attention.

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 ...

Researchers have detected previously overlooked eyes whose form and function could help to improve the evolutionary classification of archaic arthropods. Trilobites, prehistoric sea creatures, had ...

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 ...

About half a billion years ago, a volcanic eruption near a shallow sea in what’s now Morocco preserved some of the most complete specimens ever found of buglike sea creatures called trilobites, ...