We're still discovering new and enormous species of dinosaurs and there are likely more! The Australotitan Cooperensis, a plant-eater from the Titanosaurs family, has been officially recognized as the largest ever found in Australia and at 70 tons is among the biggest ever discovered anywhere.
New Dinosaur Species Is Australia’s Largest, Researchers Say
Australotitan cooperensis, a long-necked herbivore from the Cretaceous period, is estimated to have weighed 70 tons, measured two stories tall and extended the length of a basketball court.
nytimes.com