Giganotosaurus Facts
Pronunciation: JIG-an-oh-toe-SORE-us
Name meaning: Giant Southern Lizard
| Diet | Carnivore |
| Height | 4m |
| Length | 13m |
| Weight | 8 tonnes |
| Speed | 32 km/h |
| Environment | Land |
| Era | Cretaceous |
| Period | Late Cretaceous |
| Type | Theropod |
| Location | Argentina |
Giganotosaurus was one of the largest theropod dinosaurs ever discovered, living in what is now Argentina during the Late Cretaceous period, approximately 100.5 to 95 million years ago. This massive predator rivalled even Tyrannosaurus rex in size, though it lived much earlier and on a different continent entirely. Its name, meaning "giant southern lizard", perfectly captures both its enormous size and South American origins.
Standing about 4 metres tall at the hip and stretching up to 13 metres in length, Giganotosaurus was an apex predator of its time. It possessed a long, narrow skull filled with razor-sharp, serrated teeth designed for slicing through flesh. Unlike the bone-crushing jaws of T. rex, Giganotosaurus had a more slender build optimised for speed and agility, allowing it to pursue large prey across the ancient landscapes of Patagonia.
As a carnivore, Giganotosaurus likely hunted massive sauropod dinosaurs that shared its habitat, including enormous titanosaurs. Its long, powerful legs suggest it could reach impressive speeds of up to 32 km/h when chasing prey. The discovery of this theropod revolutionised our understanding of prehistoric predators and sparked intense scientific debate about which dinosaur truly deserves the title of largest land predator.
The remarkably complete fossil specimen, discovered in 1993, provided scientists with unprecedented insights into the anatomy and lifestyle of these giant theropods. At nearly 70% complete, the Giganotosaurus holotype remains one of the most important theropod discoveries ever made.
What made Giganotosaurus distinctive?
Giganotosaurus had an exceptionally long, narrow skull with knife-like serrated teeth, plus remarkably long and powerful hind legs. Its overall build was more slender and built for speed compared to other giant theropods, with relatively small arms ending in three-clawed hands.
Behaviour
Giganotosaurus was likely an active pursuit predator that hunted large sauropods across open terrain. Evidence suggests it may have been capable of cooperative hunting behaviour, working together with other individuals to bring down massive prey that would be impossible for a single predator to tackle.
Giganotosaurus in Popular Culture
Giganotosaurus gained significant attention following its appearance in the 2022 film Jurassic World Dominion as the main antagonist dinosaur, introducing this South American giant to mainstream audiences worldwide.
Discovery
Giganotosaurus was first described by Rodolfo Coria and Leonardo Salgado in 1995. The original fossils were discovered at Candeleros Formation, Patagonia, Argentina.
Giganotosaurus FAQ
What did Giganotosaurus eat?
Giganotosaurus was a carnivore that primarily hunted large sauropod dinosaurs, including massive titanosaurs that lived in South America during the
Late Cretaceous. Its knife-like teeth were perfectly designed for slicing through flesh rather than crushing bones, suggesting it targeted the soft tissues of its enormous prey.
How big was Giganotosaurus?
Giganotosaurus was truly enormous, measuring up to 13 metres in length and standing 4 metres tall at the hip. It weighed approximately 8 tonnes, making it one of the largest land predators that ever lived, comparable in size to the famous
Tyrannosaurus rex.
When did Giganotosaurus live?
Giganotosaurus lived during the
Late Cretaceous period, approximately 100.5 to 95 million years ago. This was much earlier than T. rex, which lived at the very end of the Cretaceous period around 68-66 million years ago.
Where was Giganotosaurus found?
Giganotosaurus was discovered in the Candeleros Formation of Patagonia, Argentina. The remarkably complete holotype specimen was found in 1993 by amateur fossil hunter Rubén Carolini, after whom the species was named Giganotosaurus carolinii.
How do you pronounce Giganotosaurus?
Giganotosaurus is pronounced JIG-an-oh-toe-SORE-us. The name breaks down into 'Gigano' (meaning giant), 'to' (meaning southern), and 'saurus' (meaning lizard), reflecting its status as a giant southern lizard.
What does Giganotosaurus mean?
Giganotosaurus means 'giant southern lizard' in Greek. The name perfectly describes this enormous theropod's massive size and South American origins, distinguishing it from the northern giants like
Tyrannosaurus rex.
How fast could Giganotosaurus run?
Scientists estimate that Giganotosaurus could reach speeds of up to 32 km/h despite its massive size. Its long, powerful legs and relatively lightweight build compared to other giant theropods made it surprisingly fast for such an enormous predator.
What type of dinosaur was Giganotosaurus?
Giganotosaurus was a theropod dinosaur, specifically a member of the family Carcharodontosauridae. Theropods were bipedal, mostly carnivorous dinosaurs that included all the major predatory species as well as modern birds.
Was Giganotosaurus related to birds?
Yes, as a theropod dinosaur, Giganotosaurus was related to modern birds, though not as closely as smaller, more bird-like theropods. All theropods, including Giganotosaurus, share a common ancestor with birds, making birds the living descendants of theropod dinosaurs.
How many Giganotosaurus fossils have been found?
Only a few Giganotosaurus specimens have been discovered. The holotype specimen found in 1993 is nearly 70% complete and remains the most significant find. Additional fragments including teeth, jaw bones, and possible trackways have also been attributed to this species.
