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Oil isn't the only thing Oklahomans have pulled out of the ground. Show your state pride or get an OK souvenir that celebrates local scientific discoveries!
The official state dinosaur of Oklahoma is a species called Acrocanthosaurus atokensis, a large carnivorous theropod. It is named after the location where it was originally discovered—Atoka County, OK.
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Species: Acrocanthosaurus atokensis
Era: Early Cretaceous (116–110 million years ago)
Location: N. America, concentrated in Oklahoma
Most Acrocanthosaurus specimens have been found throughout Oklahoma, Texas, and Wyoming. It grew up to 38 ft (11.5 m) long from snout to tail tip and weighed over 6 tons fully-grown. Its long, narrow skull was over 4 ft (1.3 m) in length. It was likely an apex predator of its territory.
Acrocanthosaurus, 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. 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. Acrocanthosaurus was a bipedal predator. As the name suggests, it is best known for the high neural spines on many of its vertebrae, which most likely supported a ridge of muscle over the animal's neck, back, and hips. Large theropod footprints discovered in Texas may have been made by Acrocanthosaurus, although there is no direct association with skeletal remains. Recent discoveries have elucidated many details of its anatomy, allowing for specialized studies focusing on its brain structure and forelimb function.