The 40m original skeleton reconstruction of Argentinosaurus huinculensis at Museo Municipal Carmen Funes in Argentina

Argentinosaurus dinosaur walks again in digital form

One of the world's largest dinosaurs has been digitally reconstructed, allowing it to take its first steps in over 94 million years.

Experts from The University of Manchester, working with scientists in Argentina, have laser scanned a 40m-long skeleton of the Cretaceous Argentinosaurus dinosaur before using an advanced computer modelling technique to recreate its walking and running movements.

The process involved computing power equivalent to 30,000 desktop computers and has allowed the scientists to test the dinosaurs’ locomotion ability for the very first time,  disproving previous suggestions that the animal was inflated in size and could not have walked.

Dr Bill Sellers, lead researcher on the project from the university's Faculty of Life Sciences, said: "If you want to work out how dinosaurs walked, the best approach is computer simulation. This is the only way of bringing together all the different strands of information we have on this dinosaur, so we can reconstruct how it once moved."

The study, published in PLOS ONE today provides the first ever 'virtual' trackway of the dinosaur thanks to Sellers’ own software Gaitsym, which he uses to investigate locomotion both living and extinct animals have to overcome.

"The important thing is that these animals are not like any animal alive today and so we can't just copy a modern animal," he explained. "Our machine learning system works purely from the information we have on the dinosaur and predicts the best possible movement patterns."

The dinosaur weighed 80 tonnes and the simulation shows that it would have reached just over 2 m/s – about 5 mph. Sellers believes the research is important for understanding more about musculoskeletal systems and for developing robots.

He said: "All vertebrates from humans to fish share the same basic muscles, bones and joints. To understand how these function we can compare how they are used in different animals, and the most interesting are often those at extremes.

“Argentinosaurus is the biggest animal that ever walked on the surface of the Earth and understanding how it did this will tell us a lot about the maximum performance of the vertebrate musculoskeletal system. We need to know more about this to help understand how it functions in ourselves.

"Similarly if we want to build better legged robots then we need to know more about the mechanics of legs in a whole range of animals and nothing has bigger, more powerful legs than Argentinosaurus."

The team of scientists included Dr Rodolfo Coria from Carmen Funes Museum, Plaza Huincal, Argentina, who was behind the first physical reconstruction of this dinosaur that takes its name from the country where it was found.

Dr Lee Margetts, who also worked on the project, said: "We used the equivalent of 30,000 desktop computers to allow Agentinosaurus to take its first steps in over 94 million years. The new study clearly demonstrates the dinosaur was more than capable of strolling across the Cretaceous planes of what is now Patagonia, South America."

The University of Manchester team now plans to use the method to recreate the steps of other dinosaurs including Triceratops, Brachiosaurus and T. rex.

For a video reconstruction of the dinosaurs gait visit the E&T Magazine Facebook page.

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