Olenellus terminatus — a rare and highly collectible trilobite from the Lower Cambrian, dating back an incredible 522–510 million years. 🕰️✨ This species marks the final chapter of the Olenellus lineage, its name derived from the Latin “terminus” meaning end. Specimens are discovered in the Upper Olenellus Zone of the Pioche Formation in western North America, especially Nevada—an iconic window into early Cambrian ecosystems. Pieces from this horizon are prized by collectors for their scientifi