'Prehistoric Pompeii' reveals 515 million-year-old sea bugs' anatomy in pristine 3D

'Prehistoric Pompeii' reveals 515 million-year-old sea bugs' anatomy in pristine 3D

By Mindy Weisberger, CNN (CNN) — About half a billion years ago, a volcanic eruption near a shallow sea in what’s now Morocco preserved some of the most complete specimens ever found of buglike sea creatures called trilobites, revealing anatomical details that scientists had never seen before. Within moments, a fast-moving torrent of hot ash and volcanic gases, called pyroclastic flow, engulfed the trilobites and then cooled and hardened to solid rock. The trilobites perished on the spot — much …