In this 2013 photo released by the Museo Paletontológico Egidio Feruglio on Saturday, May 17, 2014, the head of the museum's technical laboratory, Pablo Puerta, lies alongside a sauropod dinosaur femur, believed to be the largest in the world, in Trelew, Argentina. Paleontologists from the Museo Paletontológico Egidio Feruglio announced Friday, May 16, 2014, the discovery of the fossil remains of the sauropod dinosaur near Trelew. (AP Photo/Museo Paletontológico Egidio Feruglio, Jose Maria Farfaglia)
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