PLATE XXVIII. 



Jurassic Dinosaurs. — Sauropoda. 



DllT.IIIKM II). K. 



Page. 

 FlG. 1. .Sacrum and ilium of Diplodocus longus Marsh; seen from below; one- 

 tenth natural size 180 



1«, transverse section through second vertebra; c, cavity. 



«, lirst sacral vertebra; ac, acetabular surface; b, transverse jiroce6s of 



lirst vertebra; c, transverse process of second vertebra; d, transverse 



process of third vertebra ; f, f, foramina between sacral vertebra? ; g, 



face for ilium ; il, ilium ; is, face for ischium ; }>, last sacral vertebra ; pb, 



face for pubis. 

 Fig. 2. Right foot of Diplodocus lougns; front view; one-eighth natural size.. 180 

 a, astragalus; c. place for calcancum; d, distal phalanx; /, fibula; /, tibia; 



1-V, metatarsals; i-iii, ungual phalanges. 



FlG. 3. Ischia of Diplodocus longus: inferior view; one-eighth natural size 180 



e, distal ends; il, face for ilium; p, distal extremity ; pb, face for pubis; 



s. symphysis. 



300 



