Diplodocus (Marsh): its osteology, taxonomy, and probable habits, with a restoration of the skeleton

The first skeleton (No. 84) has been entirely freed from the matrix and is found to consist of the right femur and pelvis complete except for the left ilium, which is for the most part wanting, right scapula and coracoid, two sternals, eighteen ribs and forty-one vertebrae divided as follows : fourteen cervicals including the axis, eleven dorsals, four sacrals, and twelve caudals. These vertebrae are for the most part fairly complete, though unfortunately the sacrals and anterior cervicals are more or less injured. This series of forty-one vertebrae are believed to pertain to one individual and to form an unbroken series from the axis to the twelfth caudal, although as was shown in a previous paper,^ there is some evidence that there are perhaps one or more interruptions in the series and that one or more vertebrae are missing.