Argentinosaurus

MEET THE ANIMAL

Meet Argentinosaurus

Argentinosaurus was a giant plant-eating dinosaur from Late Cretaceous Argentina. It belonged to the titanosaurs, a group of long-necked sauropods that walked on four legs. Its impressive size is reconstructed from incomplete remains, rather than measured along a complete fossil body. That distinction matters especially for such a large animal, whose missing parts strongly influence a restored outline. [D2]

Researchers investigating its movement scanned a reconstructed skeleton at the Carmen Funes Museum. The mount supplied a three-dimensional body framework for computer modeling, but it incorporated restored parts. A mounted animal can be useful for testing ideas without becoming a complete original skeleton. Calculating mass also requires estimates of the flesh around the bones, adding another layer of assumptions. [S1]

The resulting simulations explored whether an enormous four-legged animal could produce a workable walking cycle. Successful modeled movement depended on limits imposed on its joints; some alternative joint settings failed to produce stable walking. These results support possible movement under particular assumptions. They cannot tell us the exact speed, footfall pattern or route followed by an actual Argentinosaurus millions of years ago. [S1]