34 



About thirty percent of the proximal and 

 distal surfaces are covered with vermicula- 

 tions 1 to 3 ft wide and about half as deep 

 as the thickness of the spore coat (4 to 6.5 /x) . 

 Dimensions (13 specimens) : size range, 101.8 

 to 139.6 ju, in maximum diameter; median, 

 114.1 /x. 



Holotype. — Plate 4, figure 20; negative 

 6516; Trivoli Cyclothem, maceration 1128-G, 

 slide 6, coordinates, 130.8 X 49.4; size, 

 123.5 [i in maximum diameter. 



Paratype. — Plate 4, figure 21; negative 

 6479; Trivoli Cyclothem, maceration 1128-G, 

 slide 7, coordinates, 124.1 X 57.2; size, 118.8 

 by 110.2 /x. 



Comparison. — Punctatisporites grandiver- 

 miculatus is larger than P. vermiculatus Ko- 

 sanke, 1950, which measures 57 to 73 /x. 



Derivation of name. — The species name re- 

 fers to its large (grandis) vermiculations. 



Punctatisporites variusetosus sp. nov. 

 Plate 5, figures 1-2 



Diagnosis.— The spores are radial, trilete, 

 and circular in outline when in good proxi- 

 mal-distal orientation but are usually torn or 

 folded. The rays are distinct and about 

 three-fourths the length of the spore radius, 

 or 19 to 40 /x long. The lips on either side 

 of the commissure are about 1 [i wide. The 

 surface of the spore coat is ornamented with 

 setae and papillae, which vary greatly in size 

 on the same specimen, from less than 1 /i to 

 3 /x in both diameter and length. Conical 

 projections are occasionally present. The 

 widely and irregularly spaced projections are 

 circular in end view. The number of projec- 

 tions extending beyond the margin of the 

 spore coat varies from approximately 15 to 

 about 30. The spore coat is 2 to 3 [i thick. 

 Dimensions (27 specimens) : size range, 57.6 

 to 74.2 ju in maximum diameter; median, 

 63.2 ix. 



Holotype. — Plate 5, figure 1 ; negative 4789; 

 Trivoli Cyclothem, maceration 1128-L, slide 

 20, coordinates, 137.8 X 55.9; size, 55.1 by 

 55.1 fi. 



Paratype. — Plate 5, figure 2; negative 61 70; 

 Jlenshaw Formation, maceration 1122-E, 

 slide 6, coordinates, 137.4 X 47.1; size, 60.6 

 by 58.7 [i. 



Comparison. — Punctatisporites variusetosus 

 is similar to P. setulosus Kosanke, 1950, but 

 the latter has more numerous setae rather 

 consistently over 3 /x in diameter. P. variuse- 

 tosus has coarser ornamentation, consisting 

 mainly of setae rather than cones, than P. 

 latigranifer (Loose) Schopf, Wilson, & Ben- 

 tall, 1944. 



Derivation of name. — The species name re- 

 fers to the diverse (varius) size and spacing 

 of its projections (setae) . 



Punctatisporites rudis sp. nov. 

 Plate 5, figures 3-4 



Diagnosis. — The spores are radial, trilete, 

 circular in outline, and in good proximal- 

 distal orientation due to the great thickness 

 and coarse ornamentation of the spore coat. 

 The trilete rays and commissure are distinct 

 when seen from the proximal side. The rays 

 are straight and 21 to 33 /x long. Lips are 

 absent or range up to 2 /x wide on either side 

 of the commissure. The proximal and distal 

 surfaces are coarsely ornamented with verru- 

 cose projections that produce an uneven 

 equatorial margin. As seen along the spore 

 margin, verrucae have truncated to rounded 

 ends, are broader than long, and a few are 

 slightly narrower at the base than at the ends. 

 They are up to 3.7 fi high and 4 to 6.5 /x in 

 diameter. They are very closely spaced, and 

 some are joined to form irregularly shaped, 

 obvermiculate projections. Because of this, 

 the number of projections along the spore 

 margin is difficult to determine. Projections 

 make up 80 to 90 percent of the surface 

 area of the spore coat. The spore coat is 

 5 to 6.5 /x thick. Dimensions (5 specimens) : 

 size range, 81.0 to 93.9 /x in maximum diam- 

 eter; median, 90.1 ft, (not including orna- 

 mentation) . 



Holotype. — Plate 5, figure 3 ; negative 6445 ; 

 Henshaw Formation, maceration 1122-A, 

 slide 4 ZB, coordinates, 127.6 X 34.6; size, 

 90.7 by 84.2 n (not including ornamenta- 

 tion) . 



Paratype. — Plate 5, figure 4; negative 6886; 

 Henshaw Formation, maceration 1122-A, 

 slide 30 ZB, coordinates, 136.0 X 48.6; size, 

 84.2 by 82.6 /x. 



Comparison. — Punctatisporites rudis is 

 thicker, more coarsely ornamented, and has 



