SPORE DISTRIBUTION — CASEYVILLE 



79 



9, T. 1 N., R. 12 W., contained representa- 

 tives of the following genera and species: 

 Triletes globosus var. (B) (A) 



T. horrid us (C) 



T. mamillarius (C) 



Cystosporites giganteus (C) 



Calamospora cf. C. laevigata (R) 



Large spores were extremely abundant in 

 this residue; 95 percent of the spores are 

 referable to T. globosus var. (B) . 



The following genera and species were 

 represented in the upper 17-inch coal (mac- 

 eration 795) , from the Forest Oil Company 

 core No. K031: 



Triletes subpilosus (A) 



T. mamillarius (C) 



Cystosporites giganteus (C) 



Monoletes (C) 



T. horridus (R) 



Spencerisporites cf. S. radiatus (R) 



Calamospora cf. C. laevigata (R) 



Spinose lageniculate spores constitute 90 

 percent of this assemblage, which is mark- 

 edly different from those assemblages of the 

 other unnamed coals of these two cores in 

 the abundance of spinose lageniculate 

 spores and in the apparent absence of 

 spores of T. globosus var. (B) . 



At present the exact stratigraphic rela- 

 tionship of the two coals from the two cores 

 is not known. The lowest coal (maceration 

 798) of core M021 is undoubtedly the old- 

 est Pennsylvania!! coal in the cores. The 

 next three coals could be listed above in 

 their proper stratigraphic order with nei- 

 ther coal of core K031 corresponding to the 

 upper coal of core M021; however, it is pos- 

 sible that the coal (maceration 796) , of 

 core K031 may represent the unsampled 

 middle 6-inch coal from core M021. 



Wayside Coal 



One sample of the Wayside Coal (mac- 

 eration 609) from Johnson County, Illi- 

 nois, yielded rather numerous small spores 

 but they represented only a few species 

 (Kosanke, 1950) . Spores of Lycospora 

 pseudoannulata averaged 70 to 75 percent 

 of the total small spore content. The coarse 

 residue contained only some seed mem- 

 branes and a few abortive spores of Cysto- 

 sporites giganteus. 



Battery Rock Coal 



The coarse residue of Battery Rock Coal 

 contained many more large spores than did 

 that of the Wayside Coal. A sample of the 

 Battery Rock Coal (maceration 587) , col- 

 lected from the mine dumps at Battery 

 Rock, about one mile from the type section 

 of the Battery Rock Cyclothem in Hardin 

 County, Illinois, contained representatives 

 of the following genera and species: 

 Triletes subpilosus (A) 



T. praetextus (P) 



T. globosus var. (B) (P) 



Cystosporites giganteus (P) 



Spencerisporites cf. S. radiatus (R) 



In addition the coarse residue yielded 

 many spore masses containing small spores 

 referable to Granulatisporites. Triletes 

 praetextus apparently is restricted to this 

 coal in Illinois. According to Wanless 

 (1955) the roof shale of this coal contains 

 a flora that permits its correlation with the 

 Sharon Coal of Ohio, Sewell Coal of West 

 Virginia, Sewanee Coal of Tennessee, Mary 

 Lee Coal of Alabama, and Baldwin Coal of 

 Arkansas. 



Several other samples, identified as Bat- 

 tery Rock Coal, also were examined. One 

 sample (maceration 733) , from an aban- 

 doned shaft mine in Crittenden County, 

 Kentucky, contained abundant spores of 

 Triletes auritus and a few spores typical of 

 T. globosus. Another sample (maceration 

 629) from an outcrop in Pope County, Illi- 

 nois, contained abundant spores typical of 

 T. globosus and some of Cystosporites gi- 

 ganteus and Spencerisporites cf. S. radiatus. 

 Both assemblages differ from that listed 

 above (maceration 587) in that they lack 

 T. praetextus and have spores typical of T. 

 globosus rather than those typical of T. glo- 

 bosus var. (B) . One sample also contained 

 abundant auriculate megaspores. 



A third coal, called Battery Rock (mac- 

 erations 908 and 909), cropping out in 

 NE14 SW14 SE14 sec. 31, T. 11 S., R. 5 E., 

 Pope County, Illinois, contained an assem- 

 blage almost identical in representation and 

 abundance ratios to that of the Battery 

 Rock sample (maceration 629) from the 

 same county. In addition a few spores of 

 Calamospora cf. C. laevigata also were pres- 

 ent. 



