Live reconstruction of Allosaurus
The Allosauroidea are a clade of Carnosauria. They include Allosaurus fragilis and Sinraptor dongi, her youngest common ancestor and all its descendants. The group includes four families who Allosauridae that Sinraptoridae that Carcharodontosauridae and Neovenatoridae.
The members of the Allosauroidea were all carnivorous (meat eating ) and moving biped ( two-legged ) away. Just like most other theropods even had any Allosauroide arms with three fingers, which were equipped with impressive claws.
The size of each species varied greatly. So the Sinraptor was with about six to seven feet in length rather small compared to the Carcharodontosauriden. Some of them, such as the Giganotosaurus Carcharodontosaurus, or were among the largest predatory dinosaurs of all time. Genera such as Allosaurus were characterized by particularly striking features, such as a survey before the eyes from. The Allosauroiden were relatively easily constructed in relation to other families like the tyrannosaurs. So reached Tyrannosaurus, which was about three feet shorter than Giganotosaurus, with six tons nearly the same weight. The Antorbitalgrube extends to the nasal bones. The distal end of the Proc. paroccipitalis is completely below the foramen magnum.
The following cladogram from the first description of Siats shows the internal classification of Allosauroidea:
" Sinraptor " hepingensis