Mapusaurus

Mapusaurus ("earth lizard") was a giant carnosaurian dinosaur from the early Late Cretaceous of what is now Argentina.

Description
It was similar in size to its close relative Giganotosaurus, with the largest known individuals estimated as over 10.2 metres (33 ft) in length and weighing approximately 3 metric tons (3.3 short tons). The longest individual for which Coria and Currie provided an estimate is the animal to which femur MCF-PVPH-208.203 belonged; this individual is estimated as 10.2 metres (33 ft) long. Coria and Currie note the presence of isolated bones from at least one longer individual, but do not provide a figure, instead finding the larger bones comparable in size to those from a Giganotosaurus estimated at 12.2 metres (40 ft) in length.