siats meekerorum tyrannosaurs awesome science dinosaurs - 7916040448
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A new species of carnivorous dinosaur -- one of the three largest ever discovered in North America -- lived alongside and competed with small-bodied tyrannosaurs 98 million years ago. This newly discovered species, Siats meekerorum, (pronounced see-atch) was the apex predator of its time, and kept tyrannosaurs from assuming top predator roles for millions of years.