Single Orthocera Mini Plates

Orthoceras was an extinct genus of nautiloid cephalopod that lived from the Ordovician to the Triassic periods, approximately 500 to 200 million years ago. These marine animals had a long, straight, conical shell with internal chambers called septa, connected by a tube called a siphuncle, which they used for buoyancy and propulsion. Orthoceras fossils are found worldwide, particularly in limestone deposits, and are often polished to reveal their distinctive chambered structure.