JOHN SIBBICK / SCIENCE PHOTO LIBRARY JOHN SIBBICK / SCIENCE PHOTO LIBRARY
Sauropod bone structure. Cutaway computer illustration of a typical sauropod dinosaur, showing the heavy thick bones of its forelimbs that helped support its massive weight. Sauropods include the well-known dinosaurs such as Diplodocus and Brontosaurus, some of which were the largest animals to have ever lived.
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