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Introduction: Acrocanthosaurus Dinosaur

Acrocanthosaurus is an extinct genus of theropod dinosaur that lived in North America during the Early Cretaceous period, about 125 million years ago. It had a long neck, short head, and a relatively large arms and legs. It was a bipedal carnivore and its fossils indicate that it was one of the largest and most powerful predators of its time. Acrocanthosaurus had a strong build, with a large skull and bony ridge running along its back. It is known only from a handful of specimens, so not much is known about its behavior and physiology. Acrocanthosaurus is the type species of its genus, which is often referred to as the “the African predatory dinosaur”.

Physical Attributes of Acrocanthosaurus

Acrocanthosaurus was a large theropod dinosaur, estimated at 11 to 12 meters long and weighing 4 to 6 tons. It had a long neck, short head, and a relatively large arms and legs. Its skull was long and narrow, with a large horn and bony ridge running from the top of its head to the base of its neck. Its body was lightly built, with slender legs and long feet. Its toes were tipped with sharp claws, and its hands had three long, curved claws. Its tail was long and had thin, pointed vertebrae.

Feeding, Hunting and Diet

Acrocanthosaurus was a carnivore, and likely actively hunted its prey. Its diet likely included large animals including other dinosaurs, crocodilians, pterosaurs and various types of small mammals. It had a powerful bite and sharp, pointed teeth, suggesting that it was able to easily tear and rip its prey apart. Its speed and agility made it a formidable hunter.

Behavior, Habitat and Lifestyle

Acrocanthosaurus is thought to have been a solitary hunter, though some specimens indicate the presence of a few individuals at one time. Its habitat would have been mostly open woodlands and plains, with some areas inhabited by dinosaurs, pterosaurs and fish. It is possible that Acrocanthosaurus was a scavenger as well as a hunter, feeding on dead animals when available.

Acrocanthosaurus two


Acrocanthosaurus went extinct sometime during the Late Cretaceous period, between 68 and 65 million years ago. The cause of its extinction is unknown, but it is likely due to changes in the environment or a combination of factors, including climate change and competition with other predators. It was one of the last of the “Mega Theropods”, an impressive array of large carnivorous dinosaurs that existed during the Early Cretaceous period.

Fossils and Discoveries

Fossils of Acrocanthosaurus have been found in the eastern United States, primarily in Texas and Oklahoma. Among the most famous fossil finds of Acrocanthosaurus is the Museum of Natural History specimen, nicknamed “Sue”. This specimen is one of the most complete specimens of its type and is currently on display at the museum. Other well-preserved Acrocanthosaurus fossils have been found in Montana, Utah, Montana, and New Mexico.


Acrocanthosaurus was a powerful and formidable dinosaur that lived during the Early Cretaceous Period. Its fossils have been found in several parts of North America, primarily in the eastern United States. Its diet likely included other dinosaurs and various small mammals, and it is thought to have been a solitary hunter. Acrocanthosaurus went extinct sometime during the Late Cretaceous period, though the cause of its extinction is unknown. Despite its relative obscurity, Acrocanthosaurus remains one of the most impressive and important predatory dinosaurs that ever lived.

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