File:Pachycephalosaurus ontogeny skulls - Museum of the Rockies - 2013-07-08.jpg
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Date/Time | Dimensions | User | Comment | |
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current | 12:03, 6 August 2013 | 3,000 × 2,644 (5.11 MB) | Tim1965 | {{Information |Description ={{en|1=Three Pacycephalosaurus skulls, showing the development from juvenile to adult, at the Museum of the Rockies in Bozeman, Montana. In the lower right is the mis-named Dracorex -- once thought to be a genus of the P... |
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