THEIR USE IN CORRELATION 117 



PLATE 12 



Fig. 1. — Raistrickia rubida sp. nov. holotype, maceration 574 Slide 19, Shoal Creek coal bed, 

 Bond County, Illinois, overall dimensions are 65.1 X 65.1 microns. 



Fig. 2. — Florinites simiiis sp. nov. holotype, maceration 542-C Slide 2, No. 8 coal bed, Peoria 

 County, Illinois, overall dimensions are 92.4 X 132.7 microns. 



Fig. 3. — F. triletus sp. nov. holotype, maceration 574 Slide 3, Shoal Creek coal bed, Bond County, 

 Illinois, overall dimensions are 52.9 X 65.1 microns. Specimen focused to illustrate 

 partial overlap of bladder on spore body distally, and trilete mark. 



Fig. 4. — Same specimen as in fig. 3, focused to illustrate reticulate bladder ornamentation. 



Fig. 5. — F. divers if or mis sp. nov. holotype, maceration 618 Slide 2, Reynoldsburg coal bed, 

 Johnson County, Illinois, dimensions are 94.5 X 134.4 microns. 



Fig. 6. — F. antiquus Schopf, 1944, maceration 519-A Slide 15, Dekoven coal bed, Williamson 

 County, Illinois, dimensions are 65 X 84.1 microns. Proximal surface to * illustrate 

 complete overlap of the body by the bladder. 



Fig. 7. — F. antiquus Schopf, 1944, maceration 604-B Slide 7, Tarter coal bed, Fulton County 

 Illinois, dimensions are 56.7 X 73.5 microns. Notice folding of central body. 



Fig. 8. — F. antiquus Schopf, 1944, maceration 519-B Slide 8, Dekoven coal bed, Williamson 

 County, Illinois, dimensions are 53 X 73.5 microns. View to illustrate distal side of 

 body in part devoid of bladder membrane. 



