Altispinax
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Altispinax is a genus of large predatory theropod dinosaur from the Early Cretaceous period of what is now the Wadhurst Clay Formation of East Sussex, England.
Becklespinax
The humped Megalosaurus in Crystal Palace Park, London.
Von Meyer's restoration of Megalosaurus with long neural spines
Foot claw (specimen BMNH 2482) provisionally referred to Altispinax by von Huene in 1926. Natural History Museum, London.
Acrocanthosaurus
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Acrocanthosaurus is a genus of carcharodontosaurid dinosaurs that existed in what is now North America during the Barremian and early Cenomanian stages of the Early Cretaceous and Late Cretaceous, fro
Altispinax
…and the vertebrae. The vertebrae were therefore given a new name in 1988 by Gregory Paul. Paul considered them to represent a possible new species of Acrocanthosaurus, which he named Acrocanthosaurus? altispinax. The specific name was deliberately made identical to the old generic name, to emphasize that both referred…
Acrocanthosaurus skeleton
Cast of an Acrocanthosaurus atokensis skeleton (NCSM 14345) mounted at the Museum of the Red River, Idabel, Oklahoma.
Skeletal diagram
Restoration of a pair of Acrocanthosaurus engaging in courtship behavior