Giganotosaurus

From Encyclopedia Jr, free information reference for Kids

Giganotosaurus Fossil range: mid Cretaceous
Skull of Giganotosaurus
Scientific classification
Kingdom: Animalia Phylum: Chordata Class: Sauropsida Superorder: Dinosauria Order: Saurischia Suborder: Theropoda Infraorder: Carnosauria Superfamily: Allosauroidea Family: Carcharodontosauridae Subfamily: Giganotosaurinae Genus: Giganotosaurus
Binomial name
Giganotosaurus carolinii Coria & Salgado, 1995

Giganotosaurus (meaning 'giant southern lizard', derived from the Ancient Greek gigas/γιγας meaning 'giant', notos/νοτος meaning 'south wind' and saurus/σαυρος meaning 'lizard'^[1]) was a carcharodontosaurid dinosaur that lived 93 to 89 million years ago during the Turonian stage of the Late Cretaceous Period. It is one of the largest known terrestrial carnivores, longer than Tyrannosaurus, but smaller than Spinosaurus.

[edit] Discovery and species

replica, Australian Museum, Sydney

Giganotosaurus carolinii was named for Ruben Carolini, an amateur fossil hunter, who discovered the fossils in the deposits of the Rio Limay Formation of Patagonia, southern Argentina, in 1993. It was published by Rodolfo Coria and Leonardo Salgado in the journal Nature in 1995^[2].

The holotype specimen's (MUCPv-Ch1) skeleton was about 70% complete and included the skull, pelvis, leg bones and most of the backbone. A second specimen (MUCPv-95), 8% larger, has also been recovered. The largest Giganotosaurus is estimated to be 13.7 m (45 ft) long, 5-5.5 m (16.6-18.3 ft) tall, and weighed 5.2 tons. The specimen's skull was the size of a bathtub, measuring 1.95 m (6 ft 5 in). Giganotosaurus surpasses Tyrannosaurus rex in length by almost 2 m. [1].

Giganotosaurus species

• Giganotosaurus . carolinii

[edit] Paleobiology

G. carolinii was larger than T. rex but had a much smaller brain that was the size and shape of a banana. A well-developed olfactory region means it probably had a good sense of smell.

Titanosaur fossils have been recovered near the remains of Giganotosaurus, leading to speculation that these carnivores may have preyed on the giant herbivores. Fossils of related carcharodontosaurid fossils grouped closely together may indicate pack hunting, a behavior that could possibly extend to Giganotosaurus itself.

[edit] Classification

Giganotosaurus, along with relatives like Tyrannotitan, Mapusaurus and Carcharodontosaurus, are members of the carnosaur family Carcharodontosauridae. It and Mapusaurus have been placed in their own subfamily Giganotosaurinae by Coria and Currie in 2006 as more Carcharodontosaurid dinosaurs are found and described, allowing interrelationships to be calculated^[3].

[edit] Popular Culture

The original fossils of Giganotosaurus remain at the Carmen Funes Museum in Neuquen, Argentina, but replicas are common in other places, including the Australian Museum in Sydney.

For such a newly discovered dinosaur, Giganotosaurus is already gaining a name for itself in popular culture:

• The Giganotosaurus also appears in the Walking with Dinosaurs special Chased by Dinosaurs. They are seen to hunt both independently and in packs, working together to bring down an Argentinosaurus.
• One of the alternate modes of the Transformers character Magmatron is a Giganotosaurus. The others are an Elasmosaurus and a Pteranodon.
• The Zoids mecha Gojulas Giga is a Giganotosaurus type.
• The PlayStation and PC game Dino Crisis 2 features a Giganotosaurus. However, the size of the Giganotosaurus in the game was exaggerated and is much larger than in real life. In the game it is portrayed as being over 20 meters long and over 7 meters tall, while in real life it was, at most, 14 meters long and 5.5 meters tall.
• Giganotosaurus appears in the Playstation game WarPath: Jurassic Park as a playable character.
• Giganotosaurus also makes an appearance in the first person shooter PC game Carnivores 4: CityScape and can either be an enemy for the player taking the role of the Agent or can be played as if the player takes the role of Dino.

[edit] References

[edit] External links

• "Giganotosaurus carolinii". DinoData.
• "What were the longest/heaviest predatory dinosaurs?". Mike Taylor. The Dinosaur FAQ. August 27, 2002.