Sue (dinosaur)
Sue is the nickname given to FMNH PR 2081, which is the largest, most extensive and best preserved "Tyrannosaurus rex" specimen ever found, at over 90% recovered by bulk. It was discovered in August 1990, by Sue Hendrickson, an explorer and fossil collector, and was named after her. After ownership disputes were settled, the fossil was auctioned in October 1997, for US $8.3 million, the highest amount ever paid for a dinosaur fossil, and is now a permanent feature at the Field Museum of Natural History in Chicago, Illinois.
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.