ACROCANTHOSAURUS
(pronounced AK-roh-CAN-thuh-SAWR-us) Acrocanthosaurus "high-spine lizard" because of the spikes growing out of its spine) was a  (a bipedal, meat-eating dinosaur) that was roughly 35 long.. It had a big head 4.5 ft and 68 thin, sharp, serrated teeth. It had 17 inch  long spikes extending from its vertebrae along the neck and tail that may have formed a thick, fleshy sail on its back. It had powerful arms and each hands had three fingers, each equipped with long, sickle-like claws. It weighed roughly 3 tons. Acrocanthosaurus lived during the early , roughly 115 million-105 million years ago in the tropics near sea level (in what is now Oklahoma, Texas, and Utah, USA). It is known from incomplete skeletons and teeth . One is on display at the state museum in the Raleigh, NC. A skull replica is available for purchase.