One of the enduring mysteries of the beloved but long-extinct animals called trilobites is this: how did they reproduce? Despite long searching, no eggs or obvious reproductive equipment has ever ...

For the past two years, scientists have been conducting research on what are believed to be the first-ever discovered trilobite eggs paired with a fossil of the segmented creature. For the past two ...

In a rare find, scientists have examined guts, legs, and gills from an animal that was preserved for nearly 500 million years. The ancient soft parts are offering new insights into the behavior of ...

At the Roman settlement of A Cibdá de Armea in northwestern Spain, archaeologists uncovered evidence suggesting that ancient Romans adorned their amulets with fossils of extinct marine arthropods, ...

A recent study shows that marine oxygen levels were crucial to the evolution of early Paleozoic trilobite body size, suggesting that oxygen may have influenced the evolution of other animals' body ...

Despite a plethora of exceptionally preserved trilobites, trilobite reproduction has remained a mystery. No previously described trilobite has had unambiguous eggs or genitalia preserved. A new study ...

A species of ancient trilobites grew big forks on their heads to fight their opponents and impress potential mates, in what scientists say could be the earliest known example of ritualized combat.