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Temporal range: Upper Cretaceous 97 mya
Replica of Giganotosaurus at the Australian Museum in Sydney.
Scientific classification
Kingdom: Animalia
Class: Sauropsida
Superorder: Dinosauria
Order: Saurischia
Suborder: Theropoda
Family: Carcharodontosauridae
Genus: Giganotosaurus

Giganotosaurus is a large theropod dinosaur. It lived during the Upper Cretaceous, about 100–95 million years ago in what is now Argentina. The largest specimen is 13.2 m (43 ft) long,[1] and 11.5 feet [3.5m] feet tall at the hip. Its weight is estimated as 6.5 to 13.8 tonnes (14,330 to 30,420 lb).[2][3]

70 percent of the skeleton has been found. Giganotosaurus was probably the second largest carnivorous dinosaur of all time. Another large carnivore, Mapusaurus, also lived in the same territory. They were both relatives of the North African Carcharodontosaurus.

Titanosaur fossils belonging to Andesaurus and Limaysaurus have been found near the remains of Giganotosaurus. The huge titanosaur Argentinosaurus also lived in the area. Probably, the titanosaurs were the main prey of the large theropods.


  1. Holtz, Thomas R. Jr. 2012. Dinosaurs: the most complete, up-to-date encyclopedia for dinosaur lovers of all ages. Winter 2011 Appendix.
  2. Seebacher, F. (2001). "A new method to calculate allometric length-mass relationships of dinosaurs". Journal of Vertebrate Paleontology 21 (1): 51–60. doi:10.1671/0272-4634(2001)021[0051:ANMTCA]2.0.CO;2 . ISSN 0272-4634 .
  3. Therrien F. and Henderson D.M. (2007). "My theropod is bigger than yours...or not: esti body size from skull length in theropods". Journal of Vertebrate Paleontology 27 (1): 108–115. doi:10.1671/0272-4634(2007)27[108:MTIBTY]2.0.CO;2 . ISSN 0272-4634 .