Keywords: Apatosaurus ajax scapulocoracoid.jpg en Left scapula and coracoid of Apatosaurus ajax Marsh; one-fourteenth natural size a scapular face of glenoid cavity; b rugose surface for union with coracoid; a' coracoidean part of glenoid cavity; f foramen in coracoid 1879 Immediate source http //marsh dinodb com/marsh/Marsh 201879 20- 20Principle 20characters 20of 20American 20Jurassic 20dinosaurs 20Part 20II pdf<br>Original source Marsh O C 1879 Principal Characters of American Jurassic Dinosaurs Part II American Journal of Science XVII 86 “92 Othniel Charles Marsh 1831 “1899 other versions PD-old-70-1923 Uploaded with UploadWizard Apatosaurus fossils |