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@UMDscience
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Wherever tyrannosaurs dominated, medium-sized carnivores disappeared, and tyrannosaur youth took over the ecological role. A new study by @UMDGeology’s Thomas Holtz shows how the giant predator dinos moved and hunted differently at different ages. https://t.co/sLNx08S250 https://t.co/dj8dh2K2iS