Scientists have discovered the fossilized remains of a new long-necked, long-tailed dinosaur that has taken the crown for largest terrestrial animal with a body mass that can be accurately determined.

Measurements of bones from its hind leg and foreleg revealed that the animal was 65 tons, and still growing when it died in the Patagonian hills of Argentina about 77 million years ago.

“To put this in perspective, an African elephant is about five tons, T. rex is eight tons, Diplodocus is 18 tons, and a Boeing 737 is around 50 tons,” said study author and paleontologist Kenneth Lacovara at Drexel University. “And then you have Dreadnoughtus at 65 tons.”

Dreadnoughtus, meaning “fears nothing,” is named after the impervious early 20th century battleships . Although it was a plant-eater, a healthy Dreadnoughtus likely had no real issues with predators due to its intimidating size and muscular, weaponized tail.



But its enormous bulk also had a downside. Based on the width and strength of its skeleton, toppling over would likely spell death for such a heavy animal.

“If you look at its really big ribs, there's no way they're going to withstand 65 tons of weight on top of them,” hevsaid. “It would have been a catastrophic event in the life of a Dreadnoughtus if it fell over.”

However, it probably didn't do much walking around since its 37-foot-long neck could already provide access to a wide bounty of vegetation.

“How do you come up with a body size that is so enormous when you're a terrestrial animal?” said Luis Chiappe, director of the National History Museum of Los Angeles's Dinosaur Institute, who was not involved in the study. “You need to have a structural design that allows you to support a body like that, and you have to be potentially adapted to eat 24 hours a day, nonstop, with a minimal amount of sleep.”





http://mobile.nytimes.com/2014/09/05/science/dinosaur-dreadnoughtus-discovery.html?_r=0&referrer=

Wow.... More to discover in this wonderful world of ours and that's what makes life beautiful....

Hmm...this is interesting...but i dont quite agree with the 77million years part. Scientists are known to confuse others when they themselves have been confused!