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The first four of ten papers are out about the discovery of an almost complete dinosaur skeleton in southern Patagonia. This critter had a 37-foot (11.3m) neck; a 30-foot (9m) tail, which was far more muscled than that of any other known species, so it would have been a giant weapon; and weighed 65 tons.
And it wasn’t full-grown.
Based on what we know about related species, Dreadnoughtus schrani probably lived in nesting colonies, where hundreds or even thousands of females would live together and raise young. They would likely have needed to eat almost continuously, which gives you some idea of just how lush their world would have had to be.
3D scans of the bones have been made public, and upcoming papers will also look at things like their locomotion.
You can read the main paper here: http://www.nature.com/srep/2014/140904/srep06196/full/srep06196.html . That also has links to the data files, if you want to build your own dinosaur.
Newly discovered dinosaur, Dreadnoughtus, takes title of largest terrestrial animal
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