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.
Gargantuavis
Gargantuavis is a genus of extinct avialan stem-birds containing the single species Gargantuavis philoinos. "G. philoinos" lived during the late Cretaceous period in what is now southern France and northern Spain. Its fossils were discovered in several formations, which has been dated between 73.5 and 71.5 million years old. "Gargantuavis" is the largest known bird of the Mesozoic. The few known bones suggests a size between the cassowary and the ostrich. A study based on the circumference of the femur gives a mass of like modern ostriches. Given its mass "Gargantuavis" was probably flightless. Its femur shows that it was a graviportal form rather than a cursorial bird. Many aspects of its biology are unknown including its diet (the skull has not yet been found). The ecological niche of "Gargantuavis" in its ecosystem is also mysterious because it coexisted with large predators like abelisaurids theropods. In any case, and contrary to older assumptions, "Gargantuavis" shows that the extinction of non-avian dinosaurs was not a necessary condition for the emergence of giant terrestrial birds. It is possible that some of the fossil eggs found in the region, usually attributed to non-avialan dinosaurs, actually belong to this bird.