For more than 270 million years, trilobites were among the most successful and diverse creatures on Earth, with over 22,000 ...

The Burgess Shale in British Columbia is renowned for its exceptional preservation of soft tissues in fossils, including limbs and guts. While trilobites are abundant in the fossil record thanks to ...

Fossils collected more than 150 years ago show that the techniques some creatures use for defensive curling have not changed in millions of years. By Jack Tamisiea When the going got tough in the ...

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 ...

(CN) — Understanding the mating behaviors of long-extinct animals is hard. A few severed fossilized appendages may help researchers with that. Published in Geology, their study deals with trilobites, ...

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 ...

Trilobites are perhaps the most successful group of animals ever to live. Named for their distinctive three-lobed body, these armored, pill-bug-like arthropods were some of the first hard-bodied ...

Researchers formally describe Helmetia expansa, offering new insights into its anatomy, behavior and evolutionary relationships. For over a century, the Cambrian arthropod Helmetia expansa remained a ...