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- Release year
- 2009
- Genre
- Documentary, History
- External Links
- Imdb
- Description
- The Cretaceous Period spawned walking death machines with a savage combination of speed, eyesight, brainpower, and razor-sharp implements. The latest science reveals the anatomical secrets of these bloodthirsty carnivores. The Cretaceous Period spawned walking death machines of all sizes except small. No creatures since can match their savage combination of speed, eyesight, brainpower, and razor-sharp implements. The latest science reveals the anatomical secrets that made these bloodthirsty carnivores such incredible purveyors of terror.