TRADEWATER GROUP 



67 



There is a little doubt that the coal 

 samples from the localities mentioned above 

 are from the same coal bed. The No. 1 

 coal bed can be readily distinguished from 

 the Delwood and Pope Creek coal beds. 

 The dominant spore genus of the No. 1 coal 

 bed is Laevigato-sporites , since 45 percent 

 of the total spore content is that genus. 

 Calamospora, Punctati-sporites, and Denso- 

 sporites are important spore genera. Lyco- 

 spora, important in the coal beds below 

 and above the No. 1 coal bed, is almost 

 lacking. 



MURPHYSBORO COAL BED 



The Murphysboro coal bed has been 

 examined for spore content from the follow- 

 ing localities in Jackson county: south of 

 Sato, SW. J4 NE. 14 SE. i/ 4 , sec. 21, T. 

 7 S., R. 3 W. ; south of Ava, NW. 1/ NW. 

 14, sec. 36, T. 7 S., R. 4 W. ; and a sample 

 from a mine dump of the abandoned 

 Brinker Mine near Oraville. The spore 

 content differs from that of the Rock Island 

 coal bed, as can be seen in the spore distri- 

 bution chart, and therefore the two beds are 

 considered distinct. A coal bed occurring 

 below the Curlew Limestone in the NE. 

 1/4 SE. 14 NW. 14, sec. 27, T. 10 S., R. 

 6 E., Saline County, has a spore content 

 similar to that of the Murphysboro coal 

 bed and is tentatively correlated with the 

 latter. There are some differences, possibly 

 owing to insufficient collections from Saline 

 County. Denso-sporites which is present 

 from the base of the Pennsylvanian through 

 the Rock Island coal bed, appears to be 

 absent in both Jackson and Saline counties. 



The following genera and species are 

 known to be present in both Jackson and 

 Saline counties unless otherwise noted : 



Punctati-sporites fenestratus sp. nov. 



P. obliquus sp. nov. 



P. sulcatus sp. nov. 



P. quaesitus sp. nov.* 



Granulati-sporites verrucosus (Wilson 



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



G. pallidus sp. nov. 



G. aculeolatus sp. nov* 



Reticulati-sporites lacunosus sp. nov. 



Laevigato-sporites desmoinensis (Wilson 



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



L. ovalis sp. nov. 



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



10 



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

 B., 1944 



13. L. punctatus sp. nov. 



14. L. vulgaris (Ibrahim) Ibrahim, 1933** 



15. Cirratriradites maculatus Wilson and 

 Coe, 1940 



16. Endosporites ornatus Wilson and Coe, 

 1940 



17. Triquitrites pulvinatus sp. nov. 



18. T. exiquus Wilson and Kosanke, 1944 



19. T. arculatus Wilson and Coe, 1940 



20. Calamospora straminea Wilson and Ko- 

 sanke, 1944 



21. C. liquida sp. nov. 



22. C. hartungiana Schopf, 1944 



23. C. flexilis sp. nov.** 



24. Lycospora granulata sp. nov. 



25. L. brevijuga sp. nov. 



26. L. punctata sp. nov. 



27. L. micropapillatus (Wilson and Coe) S. 

 W. and B., 1944 



28. L. pseudo annul ata sp. nov. 



29. Raistrickia aculeolata Wilson and Ko- 

 sanke, 1944 



30. Florinites antiquus Schopf, 1944 



The Murphysboro coal bed is readily 

 differentiated from the Rock Island coal bed 

 below and the Bald Hill above by a sharp 

 increase in abundance of Lycospora and lack 

 of Denso-sporites. Species differences are 

 shown in the spore distribution chart. 



Bald Hill Coal Bed 



The Bald Hill coal bed is described by 

 Cady (1926). The coal collected for the 

 investigation was from Williamson Coun- 

 ty just north of Stonefort in a road-cut in 

 sec. 25, T. 10 S., R. 4 E. Wanless (1939) 

 has suggested that the Bald Hill coal bed 

 is approximately equivalent to the Upper 

 DeLong coal bed of western Illinois. One 

 sample of the DeLong coal bed from the 

 NE. 14 NW. 1/4 SW. i/4 sec. 19, T. 5 N., 

 R. 2 E., Fulton County, was prepared, but 

 only a few long-ranging genera and species 

 were obtained from a poor maceration. 

 The Bald Hill coal bed can readily be 

 identified by plant spores, differing from 

 the Murphysboro coal bed by the presence 

 of a restricted form, Triquitrites angulatus 

 sp.'nov., and four species which appear for 

 the first time in Illinois. The four species 

 are Punctati-sporites verrucifer sp. nov., 

 Reticulati-sporites adhearens sp. nov., Tri- 

 quitrites crassus sp. nov., and Florinites 

 elegans Wilson and Kosanke. 



Absent in samples from Jackson County. 

 * Absent in samples from Saline County. 



