39 



veloped lips are usually folded. The notched 

 equatorial zone is made up of a series of 

 expanded lobate or clavate projections that 

 are uniformly dense and almost opaque. The 

 width of the zone is often greatest at the 

 corners opposite the rays and varies from 5 

 to 10.5 /x. The very thin, often folded, proxi- 

 mal surface is seen to be minutely granulose 

 to punctate under oil immersion objective; 

 it gradually becomes coarsely punctate to 

 vermiculate toward the equatorial zone. A 

 distinct, deeply pitted groove concentric to 

 the spore periphery lies at the junction of the 

 proximal surface and the thickened zone. 

 The distal surface of the spore coat is thick 

 and ornamented with deep, circular or ver- 

 miculate pits that are sometimes joined al- 

 most enough to form an areolate pattern. 

 Some of the vermiculations at the margin 

 extend between, or part way into, the pro- 

 jections. Under oil immersion objective, the 

 distal surface is seen to be finely rugose be- 

 tween the vermiculations. The surface of the 

 thickened equatorial zone is discernibly levi- 

 gate under oil immersion objective. Dimen- 

 sions (30 specimens) : size range, 41.8 to 

 64.8 jii in maximum diameter (including 

 equatorial thickening) ; median, 49.8 /*,. 



Holotype. — Plate 6, figures 9, 12; Henshaw 

 Formation, maceration 1122-Q, slide 26 ZB, 

 coordinates, 122.9 X 45.3; size, 59.0 by 48.6 /a 

 (including thickened equatorial zone) . Fig- 

 ure 9, negative 6106, is focused on the equa- 

 torial thickened zone; figure 12, negative 

 6506, is focused on the distal surface. 



Paratypes. — Plate 6, figure 10; negative 

 5602; Henshaw Formation, maceration 1122- 

 A, slide 22, coordinates, 128.4 X 41.5; size, 

 58.0 by 54.1 [i (including thickened equa- 

 torial zone). Plate 6, figure 11; negative 

 6505; Henshaw Formation, maceration 1122- 

 Q, slide 30 ZB, coordinates, 129.9 x 41.2; 

 size, 49.7 by 43.6 /a (including thickened 

 equatorial zone) . 



Comparison. — Secarisporites crenatus is 

 very similar to S. remotus Neves, 1961, except 

 that the distal surface of the former is pitted, 

 vermiculate, or areolate. The distal surface 

 of S. remotus is ornamented with narrow 

 ridges and small warts. 



Derivation of name. — The species name re- 

 fers to the spore's lobate, notched [crenatus) 

 equatorial margin. 



Genus Striatosporites Bhardwaj, 1954 



Type species. — Striatosporites major Bhard- 

 waj, 1954. 



Affinity. — Unknown. 



Striatosporites cf. pfalzensis Bhardwaj & 



Venkatachala, 1957 



Plate 6, figure 13 



Genus Strotersporites Wilson, 1962 



Type species. — Strotersporites communis 

 Wilson, 1962. 



Affinity. — Unknown. 



Strotersporites sp. cf. Striatites (Luecki- 



sporites) rickteri (Klaus) Potonie, 1958 



Plate 6, figure 14 



This species of Strotersporites resembles 

 Striatites (Lueckis pontes) rickteri (Klaus) 

 Potonie, 1958, which probably should bs as- 

 signed to Strotersporites as suggested by Wil- 

 son (1962, p. 18). 



Genus Triquitrites Wilson & Coe, 1940 

 Plate 6, figure 15; plate 7, figures 1-6 



Type species. — Triquitrites arculatus Wil- 

 son & Coe, 1940. 



Affinity. — Filicinean ? 



Triquitrites arculatus Wilson & Coe, 1940 



The specimens of Triquitrites arculatus in 

 this study were compared with the one illus- 

 trated by Wilson (1958, pi. 8, fig. 1). 



Triquitrites cf. discoidius Kosanke, 1950 



Only one specimen of Triquitrites cf. dis- 

 coidius was observed. 



Triquitrites cf. truncatus Bhardwaj & 

 Kremp, 1955 



Only one specimen of Triquitrites cf. trun- 

 catus was observed. 



Triquitrites cf. inusitatus Kosanke, 1950 



The size range of Triquitrites inusitatus ob- 

 served by Kosanke (1950, p. 39) was 60.5 



