Chordata Giganotosaurus is a genus of carcharodontosaurid dinosaur that lived around 97 million years ago during the early Cenomanian stage of the Late Cretaceous Period. It included some of the largest known terrestrial carnivores, slightly larger than the largest Tyrannosaurus, but smaller than the largest Spinosaurus and Carcharodontosaurus. Its fossils have been found in Argentina. The skull of Giganotosaurus, although large, had a slender, elongated build. It showed rugose areas on the edges of the snout top and above the eye opening. The supratemporal openings were overhung by the edges of the skull roof where the jaw muscles of each side directly attached instead of meeting each other at a midline skull crest.
Contributions by Dinoguy2, Firsfron, and J. Spencer.