SPORE DISTRIBUTION — TRADEWATER 



87 



County, contains spores of the following 

 genera and species: 



Triletes auritus (A,A) 



Monoletes (C,C) 



T. rugosus ( -, A) 



Cystosporites giganteus ( -, P) 



C. sp. (R, - ) 



T. triangulatus ( -, R) 



T. mamillarius ( -, R) 



This coal differs from that of the Murphys- 

 boro in the dominance of T. auritus rather 

 than T. triangulatus and in the absence 

 of tufted spores of Cystosporites. 



Cady (1952) suggested that a coal, 4 to 

 5 feet thick, lying below the Curlew Sand- 

 stone near New Burnside, Johnson County, 

 may be the equivalent of the Murphysboro 

 Coal. A sample (maceration 938A-C) from 

 a coal 43 inches thick in a strip mine in 

 that area contains spores of the following 

 genera and species: 



Monoletes (A,P,P) 



Triletes augustae ( -, C,A) 



T. triangulatus (R.P.P) 



Cystosporites varius ( -, R,A) 



T. ramosus (C, -, - ) 



T. auritus (R,R, - ) 



C. breretonensis ( -, -, P) 



C. giganteus (R, -, - ) 



T. rugosus ( -, R, - ) 



In the presence of Triletes augustae and 

 T. ramosus and the rarity of T. rugosus, 

 the assemblage resembles those of the Rock 

 Island (No. 1) Coal from northern Illi- 

 nois. In the same respect maceration 938A- 

 C differs from most of those from the Mur- 

 physboro Coal, except for one or two in 

 which T. augustae is represented. This New 

 Burnside sample is the only one in south- 

 ern Illinois with spores of T. ramosus at 

 this general horizon. 



Bald Hill Coal 



The Bald Hill Coal may be as much as 

 28 inches thick but it is not considered as 

 important economically as the Rock Island 

 (No. 1) , Murphysboro, or some of the over- 

 lying coals of the Tradewater Group. It 

 has been suggested, Kosanke (1950) noted, 

 that it is equivalent to the Upper DeLong 

 Coal of western Illinois. 



The following genera and species were 

 identified from the Bald Hill Coal (macer- 

 ation 520A-B) near its type locality, NW14 



SE14 sec. 25, T. 10 S., R. 4 E., Williamson 

 County: 



Triletes auritus (C, - ) 



Cystosporites varius (C, - ) 



C. breretonensis (P, - ) 



T. rugosus (P, - ) 



Monoletes (P, - ) 

 Calamospora cf. C. laevigata (R, - ) 



This assemblage differs from those of the 

 Murphysboro Coal mainly in the lack of 

 Triletes triangulatus, and it differs from the 

 coal bed below the Curlew Limestone 



(maceration 628A-B) in that tufted Cysto- 

 sporites spores are present. One sample of 

 the lower bench of the Upper DeLong Coal 



(maceration 527B) from Fulton County 

 was barren of megaspores. One sample of 

 Middle DeLong Coal (?) (maceration 

 828) from Schuyler County, contained 

 only a few spores of T. triangulatus and 

 Monoletes. A sample of Upper DeLong (?) 

 Coal (maceration 829) from the same lo- 

 cality contained the same spores as the 

 Middle DeLong (?) and a few spores of 

 Cystosporites breretonensis. 



Stonefort Coal 



The Stonefort Coal lies above the Bald 

 Hill Coal and below the Stonefort Lime- 

 stone. The coarse residue of this coal (mac- 

 eration 640) near the type Stonefort Cyclo- 

 them, Williamson County, yielded only a 

 few spores of Monoletes and Triletes tri- 

 angulatus. An unnamed coal (maceration 

 639) , just above the Stonefort Coal, near the 

 same locality, yielded only a few spores of 

 Cystosporites giganteus, T. auritus, T. tri- 

 angulatus, and more abundant spores of 

 Monoletes. The residue of this coal con- 

 sisted almost entirely of cuticle. 



One sample of a 12-inch coal (macera- 

 tion 554F) , questionably the unnamed coal 

 just above the Stonefort Coal, Franklin 

 County, contained a few spores of Triletes 

 auritus and Cystosporites breretonensis. 

 Another sample of an 11 -inch coal (macer- 

 ation 537Q) , also questionably the un- 

 named coal just above the Stonefort Coal, 

 contained only cuticle and spores of C. 

 breretonensis. 



Davis and Wiley Coals 



The Davis Coal, generally of minable 

 thickness in southeastern Williamson and 



