Existing in the Early Cretaceous period (between 115 million and 105 million years ago), Acrocanthosaurus is a genus of the family Allosauridae, almost 9 to 12 meters long with weight of 2 to 4 tons. As a bloodthirsty carnivorous dinosaur, Acrocanthosaurus is fierce enough to prey on large Sauropod dinosaurs and even eat rotten meat. Its skull alone was 1.4 meters long and its strong jaw is known to have helped the dinosaur bite off meat easily.
It is mainly characterized by the long sawtooth-like neural spine running from the neck to the tail. The spine most likely supported a ridge of muscle over its neck and tail and controlled its body temperature.
Acrocanthosaurus was presumably able to grab its prey with its robust forefeet, each bearing three sharp-clawed digits. Given its long but weak hindlimbs, however, Acrocanthosaurus might not have been a fast runner.
