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 ...

Trilobites were very abundant marine arthropods, protected by calcified exoskeletons that easily fossilized. For these reasons, the animals are very well represented in the fossil record.

More than 20,000 species of trilobite lived during the early Cambrian to the end-Permian period roughly 541 to 252 million years ago. They are some of the most common fossil specimens from this ...

The trilobite specimen hails from a well-known fossil deposit near Prague. The area’s fossils, which are often preserved in three dimensions inside of nodules nicknamed Rockycany balls ...

Many trilobites have been found with their exoskeletons fossilized in a curled position, as if holding a perpetual stomach crunch. But few of these fossils preserve the internal anatomy that ...

Researchers have described some of the best-preserved three-dimensional trilobite fossils ever discovered. The fossils, which ...

Illustration: Jiri Svoboda The fossil is of Bohemolichas incola, one of more than 20,000 trilobite species that existed during their 270-million-year reign on Earth. The specimen was found over a ...

Trilobites first appear early in the Cambrian and are one of the earliest examples of arthropods, the group that includes all insects. They flourished for over 100 million years, leaving fossils ...

The pressures of sediment layers often flatten delicate fossils. But after the eruption buried the trilobites, cool seawater mixed with the hot ash and quickly hardened the pyroclastic flow into ...