PLATE XXVI. 



Jurassic Dinosaurs. — Sauropoda. 



DlPLODOCIDyE. 



Page. 



Fig. 1. Maxillary teeth of Diplodocus longus Marsh; side view; one-half natural 

 size 179 



Fig. 2. Section of maxillary lione of Diplodocus loiigits; showing functional 

 tooth (fourth) in position and five successional teeth (2-6) in dental cavity; 



one-half natural size 179 



(i, outer wall; b, inner wall; e, cavity; e, enamel: /, foramen; >■, root. 

 FlG. '■'<■ < Vrvical vertebra, with rib, of Diplodocus longus; side view; one-eighth 



natural size 180 



a, metapophy sis ; b, ball; c, cup ; /, foramen in centrum ; r, rib; 2, anterior 

 zygapophysis; z', posterior zygapophysis. 

 FlG. 4. Twelfth caudal vertebra of Diplodocus longiis; side view; one-sixth 



natural size 180 



Fig. 5. The same vertebra; bottom view; one-sixth natural size 180 



c, anterior face for chevron; c', posterior face for chevron; s, neural spine; 

 z, anterior zygapophysis; :', posterior zygapophysis. 

 FlG. 6. Chevron found attached to tenth and eleventh vertebra" of Diplodocus 



long us; top and side views: one-tenth natural size 180 



Fig. 7. Chevron of another individual; top and side views; one-tenth natural 



size 180 



a, anterior end; p, posterior end; v, faces for articulation with vertebra?. 

 290 



