Zavacephale rinpoche was only about 3 feet long and weighed approximately 20 pounds, while its later relative Pachycephalosaurus grew to more than 15 feet long and weighed over 600 pounds.
Sources
- Dome-headed dinosaurs are rare. Scientists just found the most ... (nationalgeographic.com)
- https://www.sci.news/paleontology/zavacephale-rinpoche-14223.html (sci.news)
- https://greekreporter.com/2025/09/19/oldest-complete-dome-headed-dinosaur-mongolia/ (greekreporter.com)
- https://www.nbcnews.com/world/asia/oldest-complete-fossil-dome-headed-dinosaur-found-mongolia-rcna232070 (nbcnews.com)
- https://colombiaone.com/2025/09/18/dome-headed-dinosaur-fossil-mongolia/ (colombiaone.com)
- https://www.jpost.com/archaeology/article-867937 (jpost.com)
- https://www.npr.org/2025/10/23/nx-s1-5581469/domed-dinosaur-pachycephalosaur-fossil-discovery (npr.org)
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