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Counts of the number of skeletal specimens of “adult” megaherbivores and large theropods from the Morrison and Dinosaur Park formations—if not biased by taphonomic artifacts—suggest that the big meat‐eaters were more abundant, relative to the number of big plant‐eaters, than one would expect on the basis of the relative abundance of large carnivores and herbivores in modern mammalian faunas. Models...