Keywords: Atlantosaurus immanis pelvis.jpg en Figure 2 ”Pelvis of Atlantosaurus immanis Marsh; seen from the left one- twentieth natural size The signification of the letters is the same in both figures viz a acetabulum ; f foramen in pubis ; il ilium; is ischium; p pubis; p' post-pubis In these and the following diagrams of Dinpsaurian pelves the three bones of each are represented nearly in the same plane 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 Unnamed Dinosauria fossils |