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| Image Name | Width x Height | Size | 
|---|---|---|
| SIA3635.jpg | 640 x 533 | 81K | 
| SIA3635.jpg | 1200 x 998 | 217K | 
| SIA3635.jpg | 2430 x 2019 | 672K | 
Caption
This Corythosaurus skull, from Montana, dates to the Late Cretaceous period, 80-65 million years ago.