Allosaurus Marsh, 1877

John S. McIntosh, 1981, Annotated catalogue of the dinosaurs (Reptilia, Archosauria) in the collections of Carnegie Museum of Natural History, Bulletin of Carnegie Museum of Natural History 18, pp. 1-67 : 7

Family Megalosauridae

Genus Allosaurus Marsh, 1877

Syn.: (?) Antrodemus Leidy, 1870 .

Although it is not unlikely that the half caudal centrum upon which Leidy founded Antrodemus belongs to this animal, the realization in recent years that a number of large theropods were present in the Morrison Formation makes positive verification of the synonymy difficult. Most writers today have returned to the use of the name Allosaurusthe position adopted here.