MIDDLE DEVONIAN COAL IN ILLINOIS 13 



in outline but almost always folded. The commissure is indistinct or not visible 

 because of the ornamentation. The rays are simple, straight, and extend about 

 one-third the length of the radius. The exine is covered with very small coni that 

 are about uniform in size and less than 1 \± in height and width. The coni almost 

 touch at their bases. About 80 extend beyond the spore margin, but even under oil 

 immersion objective, the number is very difficult to count. The exine is less than 

 1 fa thick. Size range (10 specimens): 27.6 to 39.3 \x; median, 33.5 (a. 



Holotype. — Plate 4, figure 3; maceration 1510, slide 13, coordinates 135.0 

 x 36.0; size, 31.2 by 28.6 p.. 



Paratype. — Plate 4, figure 4; maceration 1510, slide 19; coordinates 142.8 

 x 57.3; size, 33.8 by 31.2 \±. 



Etymology. — The species is named for the Davenport Member of the Wapsi- 

 pinicon Limestone. 



Apicu lata s porite s dewittensis Peppers sp. nov. 

 Plate 4, figures 5-6; text figure 4C 



Description. — The spores are radial, trilete, and elliptical to circular in 

 outline. The commissure is very indistinct and often not visible. The trilete rays 

 are straight, simple, and extend almost to the equator. The proximal and distal 

 surfaces are covered with coni, about as high as they are wide, but several coni 

 may have a length one and one -half times more than their width. The coni are 

 about 1 fj. in diameter at their bases and are 1 . 5 to 2 \x apart. Between 30 and 40 

 coni can be counted at the spore margin. The exine is about 1 \i thick. Size 

 range (10 specimens): 23.1 to 35.1 [±; median, 27.6 \x. 



Holotype. — Plate 4, figure 5; maceration 1510, slide 8; coordinates 131.8 

 x 31.5; size, 28.6 by 26 \±. 



Paratype. — Plate 4, figure 6; maceration 1510, slide 27; coordinates 140.4 

 x49.5; size, 23.1 by 19.5 |jl . 



Comparison. — A. dewittensis has larger, more widely spaced coni than A. 

 davenportensis sp. nov. 



Etymology. — This species is named for DeWitt County, Illinois. 



Genus ACANTHOTRILETES (Naumova) Potonie and Kremp, 1954 

 Type species. — A. ciliatus Potonie and Kremp, 1954. 



Acanthotriletes uncatus Naumova, 1953 

 Plate 4, figure 7 



Acanthotriletes cf. polyganius Naumova, 1953 

 Plate 4, figure 8 



