Patagotitan

Patagotitan is a genus of titanosaurian sauropod from the Bajada Colorada Formation in Chubut Province, Patagonia, Argentina. It contains a single species, P. mayorum, first announced in 2014 and then validly named in 2017 by Diego Pol and colleagues.

Size
P. mayorum has been estimated to have been 40 m long, with a weight of 77 tonne. This makes it comparable to the next largest titanosaur, Puertasaurus (which weighed 73-83 tonnes ), and thus one of the largest land animals in Earth's history.

The researchers who described the animal stated:

Upon its initial discovery, science writer Brian Switek cautioned that it was too early to calculate the exact size of the dinosaur. Brian had said it may be revised to 110 ft and 50 ST.

Discovery and naming
The remains were initially discovered in 2011 by a farm laborer, in the desert near La Flecha, about 250 km west of Trelew. Excavation was done by palaeontologists from the Museum of Paleontology Egidio Feruglio. The lead scientists on the excavation were Jose Luis Carballido and Diego Pol, with partial funding from The Jurassic Foundation. Seven partial skeletons, consisting of approximately 150 bones, were uncovered, and described as in "remarkable condition".

Paleoecology
Patagotitan lived during the Late Cretaceous period, between 95 and 100 million years ago, in what was then a forested region.