TYPE SPECIES: A. ajax, Marsh, 1877 OTHER SPECIES: A. excelsus, Marsh, 1879 (as Brontosaurus) A. louisae, Holland, 1915 A. montanus, Marsh, 1877 [dubious name] (as "Titanosaurus") A. alenquerensis, de Lapparent & Zbyszewski, 1957=Lourinhasaurus alenquerensis SYNONYMS: Brontosaurus
CLASSIFICATION:
LENGTH: 21-26 meters (68-85 feet) TIME PERIOD: Kimmeridgian to Tithonian (Late Jurassic) LOCATION: Colorado and other Western North American states ABOUT: Previously known as Brontosaurus.
