• Giganotosaurus

    Category: Dinosaur

    Giganotosaurus (Gee-gah-note-oh-sore-us), Giant Southern Lizard, lived in the first part of the Late Cretaceous of South America. These gigantic allosaurids were the apex predators in fauna dominated by the supersized titianosaurs, medium sized saltasaurines and medium size abeilesaurs. Ornithiscians are the medium to small plant eaters. They disappear from the fossil record when the giant titiansaurs decline. Giganotosaurus was closely related to or a species of Carchardontosaurus.

    Giganotosaurus

    Giganotosaurus

    Genera and Species

    Classification: Theropoda, Tetanura, Carnsauria, Carcharodontosauridae

    Species: G. carolinii

    Characteristics

    Giganotosaurus was longer but lighter than Tyrannosaurus and competed with Spinosaurus as the largest theropod. The partial skulls were initially restored with too great a length. The teeth were designed like steak knives for cutting unlike the crushing spike like teeth of Tyrannosaurus.

    Size

    LENGTH: 14 m (46 ft).

    WEIGHT: 6 - 8 tons.

    Behavior

    Apex predator bone beds of the related Mapusaurus may indicate they were social. They were not evolved for running as their prey the giant sauropods like Andesaurus were not fast animals.

    History of Discovery

    Discovered Coria and Salgado, 1995 and known from a 70% complete but disarticulated skeleton that includes most of the skull.

    Paleoenvironment

    Found in Argentina South America short wet season in arid plains with forests restricted to rivers.

    References

    1. Paul, G. (2010). The Princeton Field Guide to Dinosaurs (pp. 2520). Princeton, New Jersey: University Press Princeton.

    2. Worth, G. (1999). The Dinosaur Encyclopaedia (pp. 1020). Scarborough, Western Australia: HyperWorks Reference Software.

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