In 1991, paleontologist David Gillette announced that he had found the largest of the enormous sauropod dinosaurs. He called it Seismosaurus halli, and based on the parts of the skeleton that had been ...

The longest animal that ever lived just got 40 percent shorter. A reappraisal of Seismosaurus has chopped it from 170 feet — about the length of ten hummers — to about 110 feet — a bit more than six ...

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