Ancient trilobite limbs reveal unique walking and burrowing abilities in prehistoric seas

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 their hard exoskeleton, their soft limbs are rarely preserved and poorly understood. However, Olenoides serratus, a particularly abundant and well-preserved Burgess Shale trilobite, offers a unique opportunity to study these appendages.