Researchers have made significant discoveries about trilobites, including the preservation of their soft tissues in 3D, which is shedding light on their evolution and behavior. The findings, which may be related to fossils from the Cambrian period, around 450-520 million years ago, reveal details about the trilobites' anatomy and possible abilities, such as walking and burrowing. The discoveries were made from fossils found in various locations, potentially including the Burgess Shale and Thailand, and are providing new insights into the evolution of these ancient creatures.