JJournal of Vertebrate Paleontology2/26/2026The ontogenetically youngest known pachycephalosaur (Dinosauria: Ornithischia) postcraniumBryan R. S. Moore·Jordan C. Mallon·David C. Evans·Michael J. Ryan·R. Timothy PattersonRead at Journal of Vertebrate PaleontologyTagsPaleontology and Evolutionary BiologyPaleontology