A recent study on the curvature of bones in Dinosaurs shows that the creatures that roamed the earth thousands of years before us were a bit skinnier than we would perceive and lighter than most projected. Usually scientist would measure the bones width and height and make assumptions about size Charlotte Brassey a biomechanist at the University Of Manchester England a researcher in the study said it’s different than the take a measurement and then “scal[e] this up to the size of a dinosaur” approach. Her new study of the curvature of the bones and how the stress amasses on the bones may paint a slightly different picture on what these prehistoric creatures were actually like. Hit the jump for more.

For the sake of simplicity, these calculations often model leg bones as columnar beams. However, “as soon as we introduce irregularities into their shape — the lumps, bumps and curves that are typical of animal bones — then they no longer behave like columns,” Brassey told LiveScience.
When the researchers carried out such a whole-body approach to mass prediction with Giraffatitan, the giant dinosaur previously called Brachiosaurus, they came up with a body mass of 25 tons (23 metric tons), “which is quite a bit lower than some previous predictions,” Brassey said. Previous mass estimates for Giraffatitan ranged from 31 to 86 tons (28 to 78 metric tons.)

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