New Giant Dinosaur Was the Apex Predator Before T-Rex

By Biz Carson A newly discovered 4-ton predatory dinosaur dominated Earth long before T-Rex appeared on the scene. Calculations suggest that Siats meekerorum was at least 30 feet long, making it the third largest predator ever found in North America. But that’s a conservative estimate because the bones found were from a juvenile, and a full-grown Siats (pronounced see-atch) may have been even bigger.

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Source: Wired