Dinosaur size
There were larger dinosaurs, but knowledge of them is based entirely on a small number of fragmentary fossils. Most of the largest herbivorous specimens on record were discovered in the 1970s or later, and include the massive titanosaur "Argentinosaurus huinculensis", which is the largest dinosaur known from uncontroversial evidence, estimated to have been and long. Some of the longest sauropods were those with exceptionally long, whip-like tails, such as the "Diplodocus hallorum" (formerly "Seismosaurus") and the 33- to 35-metre-long (108–115 ft) "Supersaurus". The tallest was the "Brachiosaurus".
Giraffatitan
Between 1914 and the 1990s, "Giraffatitan" was claimed to be the largest dinosaur known, (ignoring the possibly larger but lost "Amphicoelias") and thus the largest land animal in history. In the later part of the twentieth century several giant titanosaurians found appear to have surpassed "Giraffatitan" in terms of sheer mass. However, "Giraffatitan" and "Brachiosaurus" are still the largest brachiosaurid sauropods known from relatively complete material.