Plate III. Dorsal vertebrae of Barosaurus. One-eighth natural size. 
Figure i 
Figure 2 
Figure 3 
Figure 4 
Figure 5 
Figure 6 
Dorsal I (Vertebra P), anterior aspect. 
Dorsal I (Vertebra P), posterior aspect. 
Dorsal I (Vertebra P), right lateral aspect. 
Dorsal IV (Vertebra H), anterior aspect. 
Dorsal IV (Vertebra H), posterior aspect. 
Dorsal IV (Vertebra H), right lateral aspect. 
Key drawing: A, anterior, P, posterior face of centrum. C.F. or CAP.FAC, 
capitular rib facet; DIAP., diapophysis ; DIAP.LAM., diapophysial lamina; 
HOR.LAM., horizontal lamina; HYPA., hypantrum; N.C., neural canal; 
N.SP., neural spine; P.Z., postzygapophysis; P.L., pleuroccele; PO.L., post- 
spinal lamina; PR.L., prespinal lamina; PR.Z., prezygapophysis ; PR.Z.L., 
prezygapophysial lamina ; T.F., tubercular rib facet. 
