'Biggest dinosaur ever' discovered
By James MorganScience reporter, BBC News
17 May 2014 Last updated at 01:50
Fossilised bones of a dinosaur believed to be the largest creature ever to walk the Earth have been unearthed in Argentina, palaeontologists say.
Based on its huge thigh bones, it was 40m (130ft) long and 20m (65ft) tall.
Weighing in at 77 tonnes, it was as heavy as 14 African elephants, and seven tonnes heavier than the previous record holder,Argentinosaurus.
Scientists believe it is a new species of titanosaur - an enormous herbivore dating from the Late Cretaceous period.
A local farm worker first stumbled on the remains in the desert near La Flecha, about 250km (135 miles) west of Trelew, Patagonia.
Dr Diego Pol explains how the weight of the dinosaur was calculated
The fossils were then excavated by a team of palaeontologists from the Museum of Palaeontology Egidio Feruglio, led by Dr Jose Luis Carballido and Dr Diego Pol.
http://m.bbc.com/news/science-environment-27441156
