Most pristine trilobite fossils ever found shake up scientific understanding of the long extinct group Phys.orgA Trilobite Pompeii Preserves Exquisite Fossils in Volcanic Ash The New York TimesNever-Before-Seen Trilobite Anatomy Preserved by Pompeii-Like Ash in Morocco ScienceAlertPrehistoric creature discovered encased in ash - as scientists give it fitting nickname Daily MailTrilobites preserved in incredible detail by Pompeii-style eruption New Scientist