Summary:
- Researchers have discovered the oldest known dome-headed dinosaur fossil, dating back over 100 million years. This type of dinosaur, known as a pachycephalosaur, had a thick, domed skull that may have been used for head-butting displays or combat.
- The fossil, named Oksoko avarsan, was found in Mongolia and provides important insights into the early evolution and diversity of this group of dinosaurs. It helps fill a gap in the fossil record and shows that dome-headed dinosaurs were present much earlier than previously thought.
- The discovery of this ancient pachycephalosaur contributes to our understanding of dinosaur evolution and the emergence of specialized features like the thick skull dome. It highlights the importance of continued paleontological exploration in revealing the rich history of life on Earth.