Fossils of ‘first giant’ dinosaur uncovered in Argentina

Cecilia Apaldetti and colleagues investigate the bones More

Introducing, Ingentia prima, a large, four-legged, long-necked dinosaur that lived a whopping 47 million years before giants such as Diplodocus and Brontosaurus shook the Earth.

The specimen, which has been named Ingentia prima, sheds new light on the evolution of dinosaurs, suggesting that gigantism in these animals emerged much earlier than previously thought.

Scientists have unearthed in northwestern Argentina fossils of the earliest-known giant dinosaur, a four-legged plant-eater with a medium-length neck and long tail that was a forerunner of the largest land animals of all time.

Researchers believe that the herbivore quadruped dinosaurs, distinguished by their very long neck and tail, had a body mass of about 10 tons - approximately the weight of two or three elephants.

They were widespread - their remains have been found on all the continents except Antarctica.

Now, the discovery of Ingentia prima - a member of the Lessemsaurid group of dinosaurs and an ancestor of sauropods - shows that some dinosaurs had acquired several key characteristics during the Late Triassic that paved the way toward gigantism.

House Republicans seek answers from Apple and Alphabet on privacy issues
Lawmakers also asked about the companies' roles in policing how app makers collect and share information taken from smartphones. The letters were signed by Greg Walden of Oregon, Marsha Blackburn of Tennessee, Gregg Harper of MS , and Bob Latta of Ohio.

They all belonged to a family of dinosaurs called "lessemsaurids" and lived in what is now Argentina, but was then the southeast corner of the supercontinent Pangaea.

Dr Apaldetti said the climate would have been warm, with periodic monsoons. producing an African savanna style landscape, with plenty of shrubs on which Ingentia prima would feed.

Gigantism proved a successful evolutionary survival strategy, especially for herbivorous animals, because size is a form of defense against predators.

The fossil was found in the San Juan Province, in north-west Argentina, during a field trip.

'In addition, this kind of breathing implied the presence of cavities, or deep holes, in their bones - known as a pneumatic skeleton - that lightened the weight and would have favoured a large body size'.

While later giant dinosaurs grew in an accelerated yet continuous manner, an examination of its bones showed that Ingentia grew seasonally rather than continuously, but at an even higher rate. At the end of the Triassic period it was a type of savannah.

Related:

Comments

Latest news

Gazza's message for Southgate and his England squad
It's wonderful because I was one of those kids growing up who wanted to play for England. "I would just walk out of the room, it is an anthem and has followed the team for a long time but involved some hard moments as well".

Queen pays tribute to mark 100 years of Royal Air Force
With three royal engagements in a single day, it's no wonder Meghan Markle has made an equal amount of outfit swaps. Meetings with The President of Ireland, Michael Higgins, and with The Taoiseach, Leo Varadkar, are both planned.

Compensation sought for Australians caught up in Facebook privacy breach
The scandal took place before new European Union data protection laws that allow much larger fines came into force. That's despite earlier estimates that 2.7 million users in the European Union had their data improperly shared.

Key numbers: Ronaldo to leave Madrid for Juventus
I'm leaving but this shirt, this shield and the Santiago Bernabéu will continue to always feel as my own wherever I am. He spent six seasons in England, winning three Premier League titles, one Champions League title and one FA Cup.

Drake Reportedly Has Another Release Lined Up to Accompany New Record Deal
The double-album, released on Friday, June 29, 2018, is Drake's eight consecutive album to find a No. 1 spot. The Toronto-based artist "boasts seven songs in the top 10 simultaneously".

Sharp Objects: Amy Adams’s new HBO series revealed
The series is supposed to have a total of eight episodes , but HBO has not listed the name or date for Episode 8 yet. What's more, according to the AV/TV Club , there's also some Emmy buzz already surrounding Sharp Objects .

Prince Louis Christening Photos With The Royal Family Are Just So Sweet
She and her son, Prince Charles , presented a new Queen's Colour to the RAF at Buckingham Palace once the service was complete. He was set to wear the same gown worn by his older siblings , Prince George and Princess Charlotte .

The 'dual-screen' Ticwatch Pro costs $250
It enables lower power consumption as the tech allows the watch owner to switch between FSTN LCD display and an OLED display . As for the rest of the story, the TicWatch Pro has all of the specs you could ask for in a Wear OS device at this time.

North West makes her modeling debut in Fendi campaign
North West is following in her Aunty Kendall's footsteps and turning her hand to modelling. The Kardashians have built an empire on mixing family, fashion and fortunes together.

Samsung Galaxy Tab S4 with new S Pen revealed
When the Galaxy S9 Plus was first introduced, it was immediately reviewed and held the top rank at DxOMark . Unfortunately, the leak only shows the front of the device; the back would have told us a lot more.

Bugatti to launch limited-edition Chiron Divo
Bugatti will charge £4.42 million for each of the 40 Divos that will be made - a heavy premium over the other two models. The Divo is due to be unveiled at "The Quail, A Motorsports Gathering" in Monterey, California on 24 August.

Scientists Trace 'World's Oldest Colours' From Africa
When they pulverized the fossils to analyze the bacteria molecules, the researchers distilled the colors to find a brilliant pink. Despite being 4.6 billion years old, an explosion of complex life on Earth didn't take place until about 650 million years ago.

Trump administration halts billions in insurance payments under Obamacare
The decision could be a big financial hit for some insurers and may lead to higher insurance rates in some cases, critics say. Under the risk adjustment program, insurers with healthier patients pay those with sicker patients.

Hazard and rest of the Belgium squad train ahead of semi-final
Fans of Brazil have shown their displeasure at the exit of the former world champions from the 2018 World Cup . Belgian forward Romelu Lukaku has been described as Thierry Henry's "project" by Goal's Sam Lee.

Man falls overboard from cruise ship off B.C. coast
The ship, the Seven Seas Mariner, is on its way back to Vancouver from Alaska and is scheduled to stop in Victoria later Tuesday. The vessel was in USA waters, just north of Cape Flattery, at the northwestern tip of Washington state's Olympic Peninsula.

Other news