THEIR USE IN CORRELATION 103 



PLATE 5 



Fig. 1. — Reticulati-sporites irregularis sp. nov. holotype, maceration 144 Slide 1, "Sub-Babylon" 

 coal bed, Fulton County, Illinois, dimensions are 88.2 X 86.1 microns. 



Fig. 2. — R. adhearens sp. nov. holotype, maceration 519-B Slide 7, Dekoven coal bed, William- 

 son County, Illinois, dimensions are 88 X 92.4 microns. 



Fig. 3. — Laevigato-sporitcs punctatus sp. nov. holotype, maceration 625-A Slide 1, Willis coal 

 bed, Gallatin County, Illinois, dimensions are 44 X 35.7 microns. 



Fig. 4. — Reticulati-sporites splendens sp. nov. holotype, maceration 587 Slide 18, Battery Rock 

 coal bed, Hardin County, Illinois, dimensions are 58.2 X 56.7 microns. 



Fig. 5. — R. lacunosus sp. nov. holotype, maceration 625-B Slide 9, Willis coal bed, Gallatin 

 County, Illinois, dimensions are 86 X 92 microns. 



Fig. 6. — Laevigato-sporites o-valis sp. nov. showing tetrad, maceration 577 Slide 1, Carlinville 

 coal bed, Macoupin County, Illinois. 



Fig. 7. — L. ovalis sp. nov. holotype, maceration 501-A Slide 1, coal bed at 85' to 87' in the Skiles- 

 Price No. 1 well, Wabash County, Illinois, dimensions are 63 X 46.2 microns. 



Fig. 8. — L. cf. minutus (Ibrahim) S. W. and B., 1944, maceration 486-B Slide 12, Friendsville 

 coal bed, Wabash County, Illinois, dimensions are 24.7 X 20 microns. 



Fig. 9. — L. robustus sp. nov. holotype, maceration 574 Slide 8, Shoal Creek coal bed, Bond 

 County, Illinois, dimensions are 101. G X 73.5 microns. 



Fig. 10. — L. pseudothiessenii sp. nov. holotype, maceration 543-D Slide 4, No. 5 coal bed, Fulton 

 County, Illinois, dimensions are 37.8 X 29.4 microns. 



Fig. 11.— L. latus sp. nov. holotype, maceration 490-A Slide 6, McCleary's Bluff coal bed, Wabash 

 County, Illinois, dimensions are 63 X 54.6 microns. 



