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In their perspective “Sauropod gigantism” (10 October 2008, [p. 200][1]), P. M. Sander and M. Clauss assumed that in order to meet their high energy demands, these long-necked dinosaurs browsed in tall trees, as do today's giraffes. Recent museum reconstructions of Barosaurus and Brachiosaurus
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Roger S. Seymour (2009) studied this question.
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