GENUS SCHULZOSPORA GEN. NOV. 



53 



vary in size from 78 to 115 microns. The 

 proximal surface is distinctly levigate for 

 approximately four-fifths of the area. The 

 distal surface is covered with a mass of 

 imbricating, blunt to round projections. 

 This dimorphic type of spore coat readily 

 assures rapid identification of the genus. 

 The projections of the distal surface range 

 in length from 3 to 12 microns, and in 

 width from 3 to 15 microns. The proximal 

 surface of the spore coat is usually at least 

 3 microns thick, and thickens toward the 

 juncture of the two types of ornamentation. 

 The distal surface is at least 4 microns 

 thick, but may be more since it is difficult 

 to measure the exact thickness due to the 

 ornamentation. The trilete mark is plain- 

 ly visible and the rays range in length from 

 30 to 35 microns. The lips are only 

 slightly developed. 



Genotype. — Maceration 537-L 3 Slide 5, 

 No. 2 coal bed, Franklin County, Illinois. 



Discussion. — Schopfites dimorphus sp. 

 nov. has proved a good guide fossil for the 

 Illinois No. 2 coal bed. It is readily identi- 

 fied and is usually abundant enough to have 

 value for correlative purposes. 



Schopfites colchesterensis sp. nov. 



Plate 13, figure 4 



Description. — Spores are radial, trilete, 

 originally spherical to ovoid in outline, and 

 are usually flattened in poor proximal-distal 

 orientation. The holotype dimensions are 

 78.1 X 90.3 microns. The proximal sur- 

 face is essentially levigate while the distal 

 area is covered with blunt projections. The 

 juncture of the two types of ornamentation 

 is somewhat irregular, and frequently some 

 projections extend well onto the proximal 

 surface. The projections are variable in 

 width and shape. They range in width 

 from 2 to 12 microns, and in length from 

 2 to 4 microns. The spore coat is 3 mi- 

 crons thick on the proximal surface and 

 thickens distally to 4+ microns on the 

 distal surface, exclusive of the projections. 

 The trilete mark is distinct and from 18 

 to 20 microns in length. The spore coat 



is frequently broken along the suture line. 

 The lips are mildly elevated. 



Holotype.— Maceration 603-C Slide 7, 

 No. 2 coal bed, Fulton County, Illinois. 



Discussion. — S. colchesterensis sp. nov. is 

 smaller in size than S. dimorphus sp. nov., 

 the distal projections are shorter, and not 

 as closely spaced. 



GENUS Schulzospora gen. nov. 

 Plate 13, figures 5-6 



The generic name Schulzospora is pro- 

 posed for spores of the following character : 

 Spores are radial and appear bilateral owing 

 to the presence of an elliptical bladder. 

 Spores are distinctly trilete and the body 

 is spherical and greatly compressed in good 

 proximal-distal orientation. The spores 

 range in size from 67 to 83 microns in width 

 and from 90 to 112 microns in length. The 

 body ranges from 60 to 75 microns in di- 

 ameter. The mode of attachment of the 

 bladder to the body is a somewhat per- 

 plexing problem because the ornamentation 

 of the body and bladder are identical. On 

 the basis of 19 isolated specimens available 

 for study it is thought that the bladder 

 completely surrounds the body of the spore, 

 a condition difficult to visualize. In shape 

 Schulzospora closely resembles Florinites, 

 but differs in the attachment of the bladder 

 to the body. Schulzospora is generally dis- 

 tinct from present recognized genera. 



Although Schulzospora is not abundant, 

 it is useful in the correlation of the Battery 

 Rock coal bed, because in Illinois it appears 

 to be restricted to this coal bed. The 

 description is given in the hope that addi- 

 tional information from other spore studies 

 might help clarify the actual type of attach- 

 ment of the bladder to the body of the 

 spore. The affinity is unknown, possibly 

 gymnospermic. 



The following species serves as the geno- 

 type. 



Schulzospora rara sp. nov. 



Plate 13, figures 5-8 



Description. — Spores are radial, trilete, 

 and elliptical in transverse plane including 



