PLATE 1 



Figure 



1. Ahrensisporites exertus sp. now, holotype, Henshaw Formation, maceration 1122-G, 

 slide 8 ZB; 38.1 by 36.6 jf; p. 13. 



2. Ahrensisporites exertus sp. nov., paratype, Henshaw Formation, maceration 1122-Q, 

 slide 17 ZB; 36.1 by 35.8 n; p. 13. 



3. Cadiospora fithiana sp. nov., holotype, Fithian Cyclothem, maceration 1170-A, slide 

 2; 57.0 by 56.7 ft; p. 14. 



4. Cadiospora fithiana sp. nov., paratype, Fithian Cvclothem, maceration 1170-A, slide 

 22; 74.5 by 70.3 fi; p. 14. 



5. Calamospora obscura sp. nov., holotype, Fithian Cyclothem, maceration 1170-A, 

 slide 1; 65.8 by 61.6^; p. 14. 



6. Calamospora obscura sp. nov., paratype, Fithian Cyclothem, maceration 1170-A, 

 slide 24; 68.3 fi in maximum diameter; p. 14. 



7. Calamospora pusilla sp. nov., holotype, Trivoli Cyclothem, maceration 1175-G, 

 slide 23; 31.2 fi in maximum diameter; p. 15. 



8. Calamospora pusilla sp. nov., paratype, Trivoli Cyclothem, maceration 1175-G, 

 slide 15; 30.2 fi in maximum diameter; p. 15. 



9. Calamospora pusilla sp. nov., paratype, Trivoli Cyclothem, maceration 1175-G, 

 slide 2; 35.8 by 33.2 /z; p. 15. 



10. Calamospora sp. 1, Trivoli Cyclothem, maceration 1128-1, slide 17; largest speci- 

 men 32.7 fi in maximum diameter; p. 15. 



11. Columinisporites ovalis sp. nov., holotype, Fithian Cyclothem, maceration 1170-G, 

 slide 15; 48.9 by 32.4 p, p. 16. 



12. Columinisporites ovalis sp. nov., paratype, Fithian Cyclothem, maceration 1170-G, 

 slide 15; 48.6 by 31.4/*; p. 16. 



13. Columinisporites sp. 1, Trivoli Cyclothem, maceration 1175-B, slide 11; 77.8 by 

 55.1 p; p. 16. 



14. Columinisporites sp. 2, Trivoli Cyclothem, maceration 1175-B, slide 20, 81.1 by 

 56.8 fi; p. 16. 



15. Convolutispora venusta Hoffmeister, Staplin, & Malloy, 1955a, Henshaw Formation, 

 maceration 1122-Z, slide 15 ZB; 60.3 by 52.5 /z. 



16. Convolutispora sp. 1, Fithian Cyclothem, maceration 1170-C, slide 16; 88.5 by 

 81.1 fi; p. 17. 



17. Convolutispora sp. 2, Henshaw Formation, maceration 1122-Z, slide 25 ZB; 51.6 by 

 45.4 /*; p. 17. 



18. Crassispora plicata sp. nov., holotype, Fithian Cyclothem, maceration 1170-D, slide 

 24; 58.3 by 52.2 /i; p. 17. 



