Largest extinct animals
A close contender in size is a giant theropod from South America, Giganotosaurus carolinii, whose holotype specimen is estimated at  in length, and another specimen is estimated at  in length. A study however presents Carcharodontosaurus as a close contender in size to Spinosaurus aegyptiacus. Some other notable giant theropods (e.g. Tyrannosaurus rex, Acrocanthosaurus, and Mapusaurus) may also have rivaled these giant theropods in size. Another very large theropod was Deinocheirus, being  tall at hips,