Diclonius is a genus of extinct dinosaurs that lived during the Late Cretaceous period, approximately 75 million years ago. These herbivorous dinosaurs were characterized by their long necks and unique skull features, which included a distinctive pair of horns. Fossils of Diclonius have been found primarily in North America, providing valuable insights into the diversity of dinosaur species during that era. The name Diclonius means "two horns," reflecting its notable physical traits. This dinosaur is part of the larger group known as hadrosaurs, or duck-billed dinosaurs, which were known for their flat, broad snouts. Diclonius likely inhabited lush, forested areas, feeding on a variety of vegetation.