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Imagine a baby Brachiosaurus no bigger than a golden retriever searching for plants alongside its siblings while trying to avoid predators eager for an easy meal. Far away, its parents, towering more than 40 feet tall, continue their lives with no direct involvement in the youngster's daily survival.
Thomas R. Holtz Jr., a principal lecturer in the University of Maryland's Department of Geology, has spent years studying how dinosaurs functioned within their ec...
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