Plate II. Cervical vertebrae of Barosaurus. 
Figure i. Cervical XII (Vertebra S), right lateral aspect. One-tenth natural 
size. 
Figure 2. Cervical XIII (Vertebra Q), oblique ventral aspect. One-tenth natural 
size. 
Figure 3. Cervical XV (Vertebra R), dorsal aspect. One-tenth natural size. 
Figure 4. Cervical XV (Vertebra R), ventral aspect. About one-eighth natural 
size. 
Key drawing : A, anterior, P, posterior face of centrum. CAP.FAC, capitular rib 
facet; DIAP., diapophysis; HOR.LAM., horizontal lamina; N.SP., neural 
spine; P.L., pleuroccele; PC.L., pleuroccele lamina; P.Z., postzygapophysis ; 
POST. OB., posterior oblique lamina; PR.Z., prezygapophysis ; TUB.FAC, 
tubercular facet; W.E., wing-like expansion. 
