PLATE IV. 



ORTHOCEUAS CALPWELLEN9I8, 11. Sp 31 



Fig. 1. Lateral view. 

 Fig. 2. Transverse view. 



POTERIOCEHAIJ .TKKHKYKN8IS, 11. Bp 3)^ 



Fig. 'A. Lateral view. 



GONIATITES U!,A1U, II. it\) . 35 



Fig. 4. Lateral view. 



Fig. ^. Pan of outer margin. 



UONIATITEH PAimi^Hl, D. flp 3*1 



Pig. ti. View of a septum. 

 Fig. 7. Lateral view, 

 Fiff. H. Ventral view. 



GONIATITEB ELKHORNENain, H. Sp 37 



Fig. 9. Lateral view. 

 Flff. 10. Ventral view. 

 Fig. 11. View of a septum. 



UONIATITES MONTOOMEHYKNPIS, H. Bp 38 



Fig. 13. Lateral view. 

 Fig. Ih. Ventral view. 

 Fig. 14. V^ lew of aeeptuni. 



GONIATITES FULTONENSIB, H. sp 88 



Fig. 16. L&teral view. 

 FiR. Iti. Ventral view. 

 Fig. 17. View of a fi»*ptum. 



