42 



PENNSYLFANIAN SPORES OF ILLINOIS 



Shoal Creek coal bed, Bond County, Illi- 

 nois. 



Discussion. — C. liquida sp. nov. is similar 

 to C. hartungiana Schopf, but lacks the 

 area contagionis. Further, the plications 

 are not generally of major dimensions. C. 

 liquida sp. nov. is probably conspecific with 

 Knox's type B 3 (1938, p. 458). 



Calamospora pedata sp. nov. 



Plate 9, figure 3 



Description. — Spores are radial, trilete, 

 originally spherical. Compression usually 

 results in one major fold. The holotype 

 measures 44.1 X 70.3 microns; before com- 

 pression it probably measured about 65 X 

 65 microns. The known size range is from 

 41 to 75 microns. The trilete rays vary 

 in length from 21 to 27.3 microns. The 

 lips are generally lacking or very small. 

 The commissure is thin but distinct. The 

 spore coat is levigate, yellow, and varies 

 in thickness from 2 to 3 microns. 



Holotype.— Maceration 542-C Slide 3, 

 No. 8 coal bed, Peoria County, Illinois. 



Discussion. — C. pedata sp. nov. is charac- 

 terized by long trilete rays and singular 

 fold. 



GENUS Reinschospora Schopf, Wilson, 

 and Bentall, 1944 



Plate 9, figures 6-7 ; Plate 10, figures 1-2 



Reinschospora has been observed in rel- 

 atively few Illinois coal beds. Its vertical 

 geological range has thus far proved limited 

 and it is therefore of importance for corre- 

 lation studies. Fragments of Reinscho- 

 spora have been isolated from the Willis 

 and Tarter coal beds of lower Tradewater 

 age. Complete specimens have been found 

 irregularly from the Scottville and higher 

 coal beds in the McLeansboro group. Per- 

 fect specimens are very rare due to the 

 delicate nature of the flange. Reinscho- 

 spora is never abundant although it aver- 

 ages one specimen per slide in the coal 

 below the New Haven Limestone at the 

 type locality and in a coal bed below this 

 horizon (Ditney coal bed) in the diamond 

 drill core from New Haven. Reinscho- 



spora appears to have been present in 

 greater abundance in southern and south- 

 western Illinois than anywhere else in the 

 state, which is in contrast to the distribu- 

 tion of Alati-sporites. Reinschospora belli- 

 tas Bentall is known from the Angle and 

 Battle Creek coal beds of southern Ten- 

 nessee. Brokaw has recognized the presence 

 of the genus in the McLeansboro group 

 from Illinois. 



The following description of the genus 

 Reinschospora is based on the two previous- 

 ly described species and three new species 

 described in this report : Spores are radial 

 and trilete, and are subtriangular to trian- 

 gular in transverse plane excluding the 

 fimbriate flange. This is shortest at the 

 corners of the radii and results in an over- 

 all outline which is subspherical in trans- 

 verse plane. The spines or setae of the 

 flange are either united or separate. In 

 one species the spines are partate and have 

 round knobs at the apex of the spines. 

 Folding of the spore body is rare except for 

 the corners of R. magnifica sp. nov. The 

 known size range is from 30 to 85 microns 

 including the flange. The body ornamen- 

 tation varies from levigate, granulose to 

 punctate. The trilete rays, lips and com- 

 missure are usually well marked, and the 

 spore coat is under 3 microns. The affinity 

 of this genus is unknown. There seems 

 little doubt that it is closely related to the 

 spore genus Granulati-sporites as pointed 

 out by Schopf, Wilson, and Bentall (1944. 

 page 53). Specimens lacking the flange 

 and therefore referrable to Granulati- 

 sporites were recorded by Bentall and the 

 same condition exists in certain Illinois coal 

 beds. Many of these cases have proved, 

 under oil immersion, to be merely Reins- 

 chospora with the flange removed. How- 

 ever, numerous specimens observed con- 

 firm Bentall's findings. 



Reinschospora magnifica sp. nov. 



Plate 10, figure 2 



Description. — Spores are radial, sub- 

 triangular in outline exclusive of setae-like 

 flange. The margin between radii is 

 concave, and the corners opposite radii are 



