All hail Dreadnoughtus  SEP 04 2014

Dreadnoughtus

There's a new king of the dinosaurs: Dreadnoughtus schrani. A skeleton of the species was unearthed in Argentina in 2005 and the results of the recently released analysis show this Dreadnoughtus was 85 feet long, weighed around 65 tons, and had a powerful "weaponized tail". The kicker? It was not yet an adult and still growing when it died.

While other giants from Patagonia are known from a handful of bones, almost half of the Dreadnoughtus skeleton has been recovered. What's more, the fossilised bones are in such good condition -- even revealing where muscles attached -- that the skeleton could provide unprecedented insights into the biology, movement and evolution of the group of huge plant-eating dinosaurs it belonged to, called the titanosaurian sauropods.

By comparison, an Apatosaurus (née Brontosaurus) is ~75 feet long and weighed 22 tons while a Boeing 737-900 weights around 50 tons. Here's some more background on the Dreadnoughtus and a video showing some of the fossils:

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