Acrocanthosaurus

Acrocanthosaurus  is a genus of theropod dinosaur that existed in what is now North America during the Aptian and early Albianstages of the Early Cretaceous. Like most dinosaur genera, Acrocanthosaurus contains only a single species, A. atokensis. Its fossil remains are found mainly in the U.S. states of Oklahoma, Texas, and Wyoming, although teeth attributed to Acrocanthosaurus have been found as far east as Maryland, suggesting a continent wide range.