Plate 13. 



Fig. 1. Ammohaculitesfoliaceus. X 25. D2039. U.S.N. M. No. 10485. 



2. Ammobaaditesfoliaceus. X 25. D2039, U.S.N.M. No. 10485. 



3. Ammobaculites tenuimargo. X 75. Microspheric form, by transmitted light. 

 4 and 5. Ammobaculites tenuimargo. X 20. D2018, U.S.N.M. No. 10473a. 



6. Avimobacidites reophaciformis. X 25. Montego Bay, Jamaica. 



7. Eaplophragmium lituolinoideum. X 15. D2706, U.S.N.M. No. 10696a. 

 102 



