Trilobites killed by volcanic ash reveal features never seen before

A team of international scientists, led by Professor Abderrazak El Albani from the University of Poitiers, discovered exceptionally preserved trilobite fossils from the Cambrian period, dating back over 500 million years. These fossils, found in volcanic ash deposits, revealed new details about the anatomy and feeding habits of trilobites, including a previously unseen mouth structure with specialized leg pairs for feeding. The study used high-resolution X-ray micro-tomography to examine the fossils in 3D, showcasing the trilobites' intricate features. The findings not only enhance our understanding of trilobites but also highlight the potential of volcanic ash deposits for preserving fossils. This research, published in Science, provides valuable insights into the ancient arthropods and underscores the significance of studying volcanic rocks for uncovering well-preserved specimens. Trilobites, now extinct, were a diverse group of arthropods that existed for millions of years and are crucial for understanding ancient marine ecosystems.