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A Re-Evaluation of the Chasmosaurine Ceratopsid Genus Chasmosaurus (Dinosauria: Ornithischia) from the Upper Cretaceous (Campanian) Dinosaur Park Formation of Western Canada
- James A. Campbell,
- Michael J. Ryan,
- Robert B. Holmes,
- Claudia J. Schröder-Adams
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- Published: January 4, 2016
- https://doi.org/10.1371/journal.pone.0145805