Named By: Friedrich von Huene - 1923.
Synonyms: Megalosaurus dunkeri.
Classification: Chordata, Reptilia, Dinosauria, Saurischia, Theropoda.
Species: A. dunkeri (type).
Known locations: Germany, Niedersachsen - Obernkirchen Sandstein.
Time period: Barremian of the Cretaceous.
Fossil representation: Teeth.
Originally described as a species of Megalosaurus in 1884, Friedrich von Huene renamed the fossils of teeth and vertebrae to Altispinax in 1923. This name reflects the size of the neural spines of the vertebrae, fossils that were later attributed to the genus after it was established upon the description of teeth. However even later study has revealed that these vertebrae actually belonged to a different high spined dinosaur called Becklespinax. With the loss of this material, Altispinax is once again known only from teeth, with the fossils in question being considered by many palaeontologists to not be diagnostic enough to establish a genus.