86 



PENNSYLVANIAN SPORES OE ILLINOIS 



approximately the same position indicated 

 by Dunbar and Henbest (1942). Thus 

 the faunal and floral evidence favors placing 

 the Carbondale-McLeansboro boundary at 

 a position higher than that to which it is 

 conventionally assigned. Were this done 

 its approximate position could probably be 

 most conveniently mapped as the base of 

 Trivoli sandstone. However, it might be 

 difficult to trace and identify this bed, 

 particularly in outcrop. 



The following genera and species have 

 been identified from the outcrop of the 

 Trivoli (No. 8) coal bed near Trivoli 

 (maceration 542 A-C), Peoria County, 

 Illinois: 



1. Punctati-sporites setnlosus sp. nov. 



2. P. grandivcrrucosus Kosanke, 1943 



3. P. orbicularis sp. nov. 



4. P. verrucifer sp. nov. 



5. P. obliqinis sp. nov. 



6. P. sp. 



7. Granulati-sporites adnatus sp. nov. 



8. G. commissuralis sp. nov. 



9. G. levis sp. nov. 



10. G. concavus 



11. Reticidati-sporites sp. 



12. Laevigato-sporites desmoinensis (Wilson 

 and Coe) S. W. and B., 1944 



13. L. minimus (Wilson and Coe) S. W. and 

 B., 1944 



14. L. minutus (Ibrahim) S. W. and B., 1944 



1 5. L. ovalis sp. nov. 



16. L. robustus sp. nov. 



17. Endosporites plicatus sp. nov. 



18. E. vesicatus sp. nov. 



19. Triq nitrites crassus sp. nov. 



20. T. discoideus sp. nov. 



21. Calamospora hartungiana Schopf, 1944 



22. C. liquida sp. nov. 



23. C. pcdata sp. nov. 



24. C. breviradiata sp. nov. 



25. Reinschospora triangularis sp. nov. 



26. Raistrickia aculeata sp. nov. 



27. Florinites antiquus Schopf, 1944 



28. F. similus sp. nov. 



29. F. sp. 



Usually 30 to 35 percent of the total 

 spore population is represented by the genus 

 Punctati-sporites and more than 25 percent 

 by P. orbis sp. nov. Calamospora usually 

 comprises 20 to 23 percent and C. brevi- 

 radiata sp. nov. usually comprises 12 per- 

 cent of the total spore population respective- 

 ly. Laevigato-sporites usually contains 15 

 to 20 percent of the total spore population 

 distributed among the five species listed 

 above. Florinites usually represented 12 to 

 15 percent and Florinites antiquus Schopf, 

 1944, averages over 10 percent of the total 



spore population respectively. The remain- 

 ing genera and species listed above are 

 minor elements of the flora. 



A coal bed less than one foot thick lying 

 18 feet below the Carlinville coal bed and 

 about 20 feet below the Carlinville limestone 

 in the SW. ]4 NE. ]/ 4 NE. \/ 4 sec. 7, T. 12 

 N., R. 8 W., Montgomery County, and 

 NW. 14 SE. l/i SW. ]/ 4 sec. 10, T. 11 N., 

 R. 8 W., Macoupin County, is correlated 

 with the Trivoli No. 8 coal bed. There is 

 surprisingly slight variation in abundance 

 of species between the localities. A minor 

 discrepancy is the absence of Granulati- 

 sporites adnatus sp. nov. in Montgomery 

 and Macoupin counties. This species, how- 

 ever, never exceeds one-half of one percent 

 of the total spore population at the type 

 locality and might be present in less abun- 

 dance elsewhere and be difficult to detect. 



Ditney Coal Bed 



The type locality of the Ditney coal bed 

 is known from an exposure in Ditney Hills, 

 Warrick County, Indiana. The bed lies 

 five to 15 feet above the distinctive West 

 Franklin limestone. The Ditney coal bed 

 is believed to be the same as the coal bed 

 penetrated nine feet above the top bench 

 of the West Franklin limestone at a depth 

 of 334 feet in the New Haven core, NE. \/ 4 

 NE. i/ 4 NW. 1/4 sec. 18, T. 7 S., R. 10 E., 

 White County, Illinois. 



The spore content of the Ditney coal bed 

 in the New Haven core is almost identical 

 with that of the Trivoli No. 8 coal bed of 

 western Illinois. Only Granulati-sporites 

 adnatus sp. nov., present in the Trivoli, ap- 

 pears to be absent in the Ditney, and only 

 Laevigato-sporites rnedius sp. nov., present 

 in the Ditney, appears to be lacking in the 

 Trivoli coal bed. Although these two coal 

 beds lie at about the same if not the same 

 horizon, proof of their actual identity is 

 still insufficient. 



The Ditney coal bed has been identified by 

 spores from rotary well samples in Wabash 

 Countv. Two such wells are the Lenghorn- 

 Helm No. 30 well, SW. \/ 4 SW. \/ 4 SE. \/ 4 

 sec. 22, T. 3 S., R. 14 W., maceration 

 516-A (470-472 feet) and the Horton-Car- 

 son No. 1 well in the SE. \/ 4 SW. \/ 4 SE. \/ 4 



