56 GUIDE TO THE FOSSIL REPTILES, AMPHIBIANS, FISHES. 
Table-ease 
A. 
Fig. 49. —Diagram of dorsal shield of Cyathaspis banksi, upper view, from 
the Upper Silurian and Downtonian of Herefordshire; slightly 
reduced, c, cornua; d, median disc; o, position of orbit; r, rostral 
plate ; s, posterior dorsal spine. (After Lankester. Table-case A.) 
Fig. 50. —Restoration of Pteraspis rostrata, left side-view, from the Lower 
Old Red Sandstone of Herefordshire; about one-third nat. size. (After 
A. S. Woodward. Table-case A.) 
Fig. 51. —Dorsal shield of Pteraspis rostrata, \ upper >view, from the 
Lower Old Red Sandstone of Herefordshire; about one-third nat. 
size. (After Lankester. Table-case A.) 
