WEIGHING in at around 77 tonnes and measuring more than 130ft long, the titanosaur would have the ability to swat away a fierce predator such as a Tyrannosaurus Rex "like a fly".
Scottish experts yesterday hailed the discovery of bones belonging to what is believed to be the largest creature ever to walk the Earth as one of the most exciting finds in the dinosaur world.
The fossilised remains of an enormous herbivore known as titanosaur were uncovered after a farm worker stumbled across them in the desert of Patagonia in Argentina, it emerged yesterday.
It is believed to have roamed the forests of what is now South America between 95 million and 100 million years ago.
The bones were excavated by a team from the Museum of Palaeontology Egidio Feruglio in Argentina, led by Dr Jose Luis Carballido and Dr Diego Pol.
Paleontology expert Dr Steve Brusatte, from Edinburgh University's school of geosciences, said as well as the size, the number of bones which had been discovered made it a hugely significant find.
Around 150 bones from seven individuals have been unearthed so far. The fossils are enormous, with one titanosaur thigh bone bigger than a human being.
"There are some vertebrae, some limb bones, and they are just absolutely massive," Brusatte said.
"It would be either the biggest dinosaur or one of the biggest dinosaurs, there is no doubt about that. Exactly how big it would have been it is hard to say, as they don't have a complete skeleton,
"But what sets this find apart is the previous two or three dinosaurs which have vied for the title of 'world's biggest' are only known from a few bones each. When all these bones are excavated, it will be our first really good picture of what one of these enormous dinosaurs would have looked like.
"It is a major discovery - one of the most important dinosaur discoveries of the last 10 or 20 years."
Brusatte's own work on identifying a new type of long-snouted tyrannosaur - nicknamed "Pinocchio rex" - made headlines around the world earlier this month.
He cautioned that the peer-reviewed research on the Patagonia titanosaur had yet to be published, but said initial estimates suggested it would have been big enough to swat away a dinosaur such as Tyrannosaurus rex "like a fly".
"T-rex was at most 40ft long or so and would have weighed about seven tonnes at the very most," he said. "If these scientists are correct, you are talking about something that is maybe double the length of T-rex, something that maybe weighed 10 times as much as T-rex.
"Of course, he wouldn't have lived near a T-rex, as they lived in different parts of the world at different times, but there would have been other big predators that this guy would have lived alongside.
"Something of this size - at least the adults - would probably have been almost incapable of being taken down by even the biggest carnivorous dinosaurs."
He added: "These guys do seem to be at the limit of how big dinosaurs could get. They are really 'outliers'."
Dr Nick Fraser, keeper of natural sciences at National Museums Scotland, said the thickness of the thigh bone which had been uncovered suggested it had supported an extremely bulky weight. He said the logistics of collecting big dinosaur bones were complicated, as skeletons were often scattered over a wide area after, for example, being washed away by floods.
"It certainly looks comparable if not bigger than many of the other large dinosaurs," he said. "The problem is you never know with these incomplete remains - did it have a particularly long neck or did it have a particularly long tail? Or it could have been shorter, so therefore that might have changed the weight and obviously the length of it.
"There is a lot of variety, but just based on that leg bone, I think it is fair enough to say that it is certainly up with the biggest, if not the biggest dinosaur to date."
The previous contender for the title of the world's biggest dinosaur was a similar type of sauropod - those with small heads, long necks, long tails and sturdy legs - known as Argentinosaurus, which was also discovered in Patagonia.
It was originally thought to weigh 100 tonnes, but further work reduced this estimate to around 70 tonnes.
Why are you making commenting on The Herald only available to subscribers?
It should have been a safe space for informed debate, somewhere for readers to discuss issues around the biggest stories of the day, but all too often the below the line comments on most websites have become bogged down by off-topic discussions and abuse.
heraldscotland.com is tackling this problem by allowing only subscribers to comment.
We are doing this to improve the experience for our loyal readers and we believe it will reduce the ability of trolls and troublemakers, who occasionally find their way onto our site, to abuse our journalists and readers. We also hope it will help the comments section fulfil its promise as a part of Scotland's conversation with itself.
We are lucky at The Herald. We are read by an informed, educated readership who can add their knowledge and insights to our stories.
That is invaluable.
We are making the subscriber-only change to support our valued readers, who tell us they don't want the site cluttered up with irrelevant comments, untruths and abuse.
In the past, the journalist’s job was to collect and distribute information to the audience. Technology means that readers can shape a discussion. We look forward to hearing from you on heraldscotland.com
Comments & Moderation
Readers’ comments: You are personally liable for the content of any comments you upload to this website, so please act responsibly. We do not pre-moderate or monitor readers’ comments appearing on our websites, but we do post-moderate in response to complaints we receive or otherwise when a potential problem comes to our attention. You can make a complaint by using the ‘report this post’ link . We may then apply our discretion under the user terms to amend or delete comments.
Post moderation is undertaken full-time 9am-6pm on weekdays, and on a part-time basis outwith those hours.
Read the rules hereComments are closed on this article