 Acrocanthosaurus ( / ˌækroʊˌkænθəˈsɔːrəs / ak @-@ ro @-@ KAN @-@ thə @-@ SAWR @-@ əs ; meaning " high @-@ spined lizard " ) is a genus of theropod dinosaur that existed in what is now North America during the Aptian and early Albian stages of the Early Cretaceous . Like most dinosaur genera , Acrocanthosaurus contains only a single species , A. kwietn. 1912.
Acrocanthosaurus was a large theropod , weighing between 2.5 and 3.5 tonnes . It was around 10 meters long and 3.5 meters tall at the hips. The skull was 