Titanosaur fossils, belonging to Andesaurus and Limaysaurus, have been recovered near the remains of Giganotosaurus, leading to speculation that these carnivores may have preyed on the giant herbivores. An extremely brutal and unethical, but effective method. The killing method of Giganotosaurus is killing by slicing through flesh and letting its prey bleed to death.
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estimated that the bite force of Giganotosaurus was three times less than that of Tyrannosaurus and that the lower jaws were optimized for inflicting slicing wounds the point of the mandibula was reinforced to this purpose with a "chin" and broadened to handle smaller prey. It had over 60 8-inches (19 centimeters), blade-like teeth that could very easily pierce and rip through its unfortunate victims' flesh. Most people speculate, considering the length and musculature of its legs, that Giganotosaurus could run even 50.4 kilometers/h, much faster than Olympic Sprinters and most of all Theropods including Rex. It had a massive skull, a long tail for extra balance to help support its massive head, fairly long and strong arms with three clawed fingers, and powerful back legs with three sharp talons on their toes. It was the descendant of Allosaurus from the Jurassic period. Giganotosaurus lived in Argentina alongside giant Sauropods like Limaysaurus, Andesaurus, and Argentinosaurus It's closest relatives were from the same continent, Tyrannotitan and Mapusaurus, and was also closely related to Carcharodontosaurus in Africa. ClassificationĬoria and Salgado originally found Giganotosaurus to group more closely with the theropod clade Tetanurae than to more basal (Or "primitive") theropods such as ceratosaurs, due to shared features (synapomorphies) in the legs, skull, and pelvis. The Specimen (MUCPv-Ch1) is 70 percent complete and is only missing its arms and feet. The most complete skeleton was housed at the Royal Ontario Museum until March 17, 2013.
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Giganotosaurus had the longest skull for a theropod dinosaur, with the holotype's skull estimated at 1.54 meters, and the paratype skull estimated at 1.64 meters, though it could reach 1.89 meters. Newer estimates rank it at around 13 metres and 7.3 tons. This larger Giganotosaurus specimen was estimated to represent an individual 13.2 meters (43 feet) long that was about 3.7 meters (12.1 feet) tall at the hips and weighed about 8.2 tonnes (9 tons). A second specimen (MUCPv-95), was estimated at 6,5–8% larger. It is estimated at about 6.8 tonnes (7.5 tons) in weight, 3.48 meters (11.4 feet) tall at the hips, and 12.4 meters (41 feet) in length. The holotype specimen's (MUCPv-Ch1) skeleton was about 70% complete and included the skull, pelvis, leg bones, and most of the backbone. It was published by Rodolfo Coria and Leonardo Selgado in the journal Nature in 1995. Giganotosaurus carolinii was named after 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 appeared superficially similar to other Carcharodontosaurs such as Carcharodontosaurus. The Giganotosaurus means "the giant southern lizard", as the Megalosaurus was the "giant lizard". The genus attracted much interest and became part of a scientific debate about the maximum sizes of theropod dinosaurs. A dentary bone, a tooth and some tracks, discovered before the holotype, were later assigned to this animal. The animal was named Giganotosaurus carolinii in 1995 the genus name translates as "giant southern lizard" and the specific name honors the discoverer, Rubén D. The holotype was discovered in the Candeleros Formation of Patagonia in 1993, and is about 70% complete. Giganotosaurus (meaning "giant southern lizard") is an extinct genus of Carcharodontosaurid theropod dinosaurs that lived in the Cenomanian of Argentina 99.6 - 97 mya.
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An artist's illustration of Giganotosaurus caroliniiĪ small theropod picks scraps from the open mouth of a Giganotosaurus individual.