21 



the rays. Leiotriletes subadnatoides Bhard- 

 waj, 1957a, differs in lacking contact areas 

 and being intrapunctate. 



Derivation of name. — The species name re- 

 fers to the thin (tenuis) spore coat. 



Granulatis pontes elegans sp. nov. 

 Plate 2, figures 13-15 



Diagnosis. — The spores are radial, trilete, 

 triangular in outline, and are usually in good 

 proximal-distal orientation. The corners op- 

 posite the rays are rounded, and the inter- 

 radial sides are slightly convex to straight. 

 The rays extend at least three-fourths the 

 length of the spore radius, usually to the 

 spore margin, but are not often visible due 

 to the coarse ornamentation. Lips are absent. 

 The distal surface and the peripheral areas 

 of the proximal surface are covered with ver- 

 rucose projections that are quite uniform in 

 size. The verrucae extend to the peripheral 

 areas of the proximal side but gradually de- 

 crease in size toward the proximal polar re- 

 gion, where they are less than 1 ^ in diameter. 

 Occasionally the margin at the corners is free 

 of verrucae. In cross section, the projections 

 are usually rounded but may be cone shaped 

 to slightly clavate. On certain specimens the 

 verrucae are practically all cone shaped, while 

 on others they are mostly clavate. They are 

 circular to oval in face view and are often 

 so closely spaced that they almost touch at 

 their bases. The verrucae are about 3 it long 

 and up to 8.5 /a in diameter. Sixty to 75 

 verrucae extend beyond the margin. The 

 exine is 2 to 2.7 tt thick. Dimensions (13 spe- 

 cimens) : size range 53.5 to 83.2 ft in maxi- 

 mum diameter (not including ornamenta- 

 tion) ; median, 68.1 [i. 



Holotype. — Plate 2, figure 13; negative 

 6133; Henshaw Formation, maceration 1122- 

 A, slide 31 ZB, coordinates, 140.1 X 31.9; 

 size, 81.0 by 76.0 /x (not including ornamen- 

 tation) . 



Paratypes. — Plate 2, figure 14; negative 

 5565; Henshaw Formation, maceration 1122- 

 A, slide 10, coordinates, 133.9 X 32.3; size, 

 74.2 by 66.7 /a. Plate 2, figure 15; negative 

 5561; Henshaw Formation, maceration 1122- 

 A, slide 14 ZB, coordinates, 134.5 X 39.5; 

 size, 64.8 by 56.4 /a. 



Comparison. — Granulatis pontes elegans is 

 strikingly similar to Verrucosis pontes naumo- 



vai Hart, 1963, except that it has verrucae 

 that decrease in size toward the trilete rays 

 on the proximal surface. 



Discussion. — Granulatis pontes elegans is a 

 useful stratigraphic marker for the subsurface 

 strata of late Missourian age in Harper and 

 Beaver Counties, Oklahoma (C. J. Felix, per- 

 sonal communication, 1963). 



Derivation of name. — The name refers to 

 the ornamentation of the species. 



Granulatis pontes sp. 1 

 Plate 2, figure 16 



The spores are radial, trilete, and triangu- 

 lar in outline, and have well rounded corners 

 and concave interradial sides. The rays are 

 distinct and almost reach the spore margin. 

 The surface of the spore coat is ornamented 

 with widely spaced, bluntly cone-shaped pro- 

 jections about 1.5 /a long and 1.5 At in diame- 

 ter. About 40 coni extend beyond the mar- 

 gin. The exine is about 2 ai thick. This species 

 is more coarsely ornamented than Granu- 

 latis pontes commissuralis Kosanke, 1950, and 

 G. granulatus Ibrahim, 1933. 



Figured specimen. — Negative 5521; Hen- 

 shaw Formation, maceration 1122-Q, slide 

 24 ZB, coordinates, 134.0 x 40.2; size, 36.7 

 by 34.0 fi. This species was also found in 

 macerations 1122-G and 11 22- A, in the Fith- 

 ian Cyclothem maceration 1170-G, and in 

 the Trivoli Cyclothem maceration 1175-J. 



Granulatis pontes sp. 2 

 Plate 2, figure 17 



The spores are radial, trilete, and triangu- 

 lar in outline, and have well rounded corners 

 and concave to straight interradial sides. The 

 rays are distinct, straight, and extend almost 

 to the spore margin. The lips are very nar- 

 row and slightly elevated. A conspicuous, 

 raised, thickened pyramidal area is present 

 and extends about one-third of the distance 

 from the poles to the interradial sides and 

 one-half to two-thirds of the distance to the 

 corners opposite the rays. The interradial 

 margins of the area contagionis are sharply 

 delineated and usually raised. Granules on 

 the surface of the exine can be seen under oil 

 immersion objective. The spore coat is 1 

 to 1.5 fi thick. Dimensions (5 specimens): 

 size range, 24.4 to 32.4 /a in maximum diam- 

 eter; median, 27.2 /a. 



