TJST OF FIGURES IN TEXT. 



PART I. 

 Fkiikk. Page. 



1. Skull of J>ijj/o<]ocu.s lonf/ux :\Iar.sli 5 



2. Dentary Bone of IHplmlonis Ioikjus 8 



3. Section of Maxillary Bone of JUjJodocus loncjus 9 



4. Atlas of Diplodocus lom/us, Side View 19 



5. Atlas of Diplodocim lonr/m, Front View 19 



6. Axis of DiplodocuH cwnef/ii, Seen from Right Side '20 



7. Tenth, Eleventh, and Twelfth Cervicals of Diplodoem canuyil, Seen from Right Side. . 22 



8. Posterior View of Eleventh Cervical of Dip/odocus carnegil .• 23 



9. Inferior View of Sacrum and Ilia of Diplodocus carner/ii 30 



10. Sacrum and Ilium of Diplodocus hiiffus Marsh, Seen from Below 33 



11. Coossified Caudal Vertebrae of Diplodocua oartiefjfii 3(5 



12. Superior View of Pair of Sternal Bones of Dlp/ndocns cdnurfii 40 



13. Supposed Clavicle of IHplodocua carnaju 41 



14. External View of Right Scapula and Coracoid of Dlplodocm carna/i'i 44 



15. Proximal P]nd of Left Femur o{ Diplodocus cariKyii 4() 



K). Distal End of Left Femur of Diplodocus canuyii 4G 



17. Oblique Internal Front View of I^eft Femur of f)ij>loilocus ciuimjii 47 



18. Proximal End of Right Tibia and Fibula of Diplodocus carneijii 48 



19. Distal End of Right Tibia and Fibula of Diplodocus carne<jii 48 



20. Superior View of Astragalus of Right Pes of Diplodocus canuyii 50 



21. Front View of Right Hind Foot of Diplodocus carnct/ii 51 



22. Front View of Right Hind I''ocit of /Irontosaurus e.rcflsus Marsh 52 



23. Cross-sections of Left Fciiuii' of Diplodocus carnrf/ii 53 



24. Cervical Vcrtel)ra of Dijiloilorus Ioikjus Marsh ■• . 5(5 



P.\RT II. 



1. Skull (.f DaplKnius jVlinus Scott 70 



2. Inferior View of Basieranial Region of Skull oH 'aul.^ J'imdiuris 73 



3. Inferior View of Basieranial Region of Skull of Dopluniux jvlinus 74 



4. Crown View of Right Superior Sectorials of ['roilnpluvnus scullii, Ihtpliunus j'ilinu)<, anil 



('(hiis Idrjopux 77 



5. Crown View of Right M.s of Dapikmius fclinus 78 



6. Side View of Type of Proamphicyon nchrascensis Hatcher 9() 



7. Crown View of Superior Dentition of Type oi Produipliiri/oii nchrascensis Hatcher 98 



