Figure 1.-Tooth of Morosaurus grandis Marsh; side view. Figure 2.-The same; front view. Both one-half natural size. Figure 3.-Axis and part of atlas of Morosaurus grandis; side view, one-eighth natural size. a. odontoid process, or centrum of atlas; ax. centrum of axis; f. foramen in centrum; s. neural spine.

Figure 4.-The same; front view. d. diapophysis; z. zygapophysis. Figure 5.--Fourth cervical vertebra of Morosaurus grandis; side view, oneeighth natural size. b. ball on anterior end of centrum; f. foramen in centrum; z. anterior zygapophysis; z. posterior zygapophysis.

Figure 6.-The same; back view. c. cup on posterior end of centrum; d. diapophysis; e, parapophysis; z'. posterior zygapophysis.

Left scapula and coracoid of Morosaurus grandis Marsh; side view; one tenth natural size. a. scapular face of glenoid cavity; b. rugose surface of scapula for union with coracoid; a'. coracoidean part of glenoid cavity.