31 



Comparison. — Punctatis pontes compactus 

 is similar to Filicitriletes rectispinus (Luber) 

 Luber, 1955, but the latter has distinct rays 

 and is ornamented with spines that are not 

 as closely spaced as the papillae of P. com- 

 pactus. 



Derivation of name. — The species name 

 refers to the concentrated {compactus) na- 

 ture or density of the projections. 



Punctatis pontes productus sp. nov. 

 Plate 4, figures 5-6 



Diagnosis. — The spores are radial, trilete, 

 and roundly triangular to circular in outline. 

 The rays extend to the margin but are not 

 always distinct. The proximal and distal sur- 

 faces are covered with long, narrow setae, 

 which are widest at their bases and gently 

 taper toward their broadly rounded ends. The 

 gently curved and widely spaced setae are be- 

 tween 3 and 7.5 fx long and 1 to 1.5 /x wide. 

 From 20 to 30 setae extend beyond the spore 

 margin. The surface of the spore coat be- 

 tween the setae appears slightly granular un- 

 der oil immersion objective. The spore coat 

 is about 1.5 /x thick. Dimensions (8 speci- 

 mens) : size range, 20.1 to 26.9 /x in maxi- 

 mum diameter (not including ornamenta- 

 tion) ; median, 22.2 /x. 



Holotype. — Plate 4, figure 5; negative 6138; 

 Henshaw Formation, maceration 1122-Q, 

 slide 22 ZB, coordinates, 138.8 X 44.0; size, 

 21.7 by 19.4 ii. 



Paratype. — Plate 4, figure 6; negative 5465; 

 Henshaw Formation, maceration 1122-Q, 

 slide 24, coordinates, 144.4 x 41.1; size, 22.7 

 by 21.4 jx (not including ornamentation). 



Derivation of name. — The specific epithet 

 refers to the long (productus) projections. 



Punctatis pontes minutus (Kosanke, 

 1950) emended 

 Plate 4, figure 7 



Re-examination of the type specimen and 

 other specimens (Kosanke, personal commu- 

 nication, 1961) of Punctatis pontes minutus 

 1 has shown that the spore coat is finely granu- 

 I lose (grana less than 1 /x in diameter) rather 

 than punctate as originally described (Ko- 

 | sanke, 1950, p. 15-16). As the grana do not 

 ! extend as far beyond the margin as one would 

 I expect after observing them in face view, 



they are probably partly submerged in the 

 spore coat. 



Punctatis pontes bondensis sp. nov. 

 Plate 4, figures 8-9 



Diagnosis. — The spores are radial, trilete, 

 and subcircular to subtriangular in outline. 

 The rays are distinct, straight, and extend 

 at least three-fourths the length of the spore 

 radius. Lips on either side of the commissure 

 are about 1 jx wide. Proximal and distal 

 surfaces of the exine are ornamented with 

 clavate, verrucose to obvermiculate projec- 

 tions less than 1 n to 4.8 /x in diameter and 

 less than 1 /x to 3 /x long. The ornamentation 

 becomes finer toward the poles. In face view, 

 the projections are subcircular to irregularly 

 shaped in outline. Enough space exists be- 

 tween the projections for additional projec- 

 tions of equal size. Between 20 and 30 pro- 

 jections extend beyond the spore margin. 

 The spore coat is 1.5 to 2 \l thick. Dimensions 

 (22 specimens) : size range, 22.7 to 35.4 fx in 

 maximum diameter (not including ornamen- 

 tation) ; median, 29.1 ix. 



Holotype. — Plate 4, figure 8; negative 6132 ; 

 Fithian Cyclothem, maceration 1170-C, slide 

 9, coordinates, 131.2 X 38.9; size, 26.2 by 

 25.3 [x (not including ornamentation) . 



Paratype. — Plate 4, figure 9; negative 5733; 

 Fithian Cyclothem, maceration 1170-B, slide 

 3, coordinates, 142.3 X 31.3; size, 32.4 by 

 29.7 ix. 



Derivation of name. — The species name 

 refers to the Bond Formation. 



Punctatis pontes racemus sp. nov. 

 Plate 4, figures 10-11 



Diagnosis. — The spores are radial, trilete, 

 and subcircular in outline. The rays, equal in 

 length to the spore radius, are often ob- 

 scured by the coarse ornamentation. The 

 spore coat is covered with coarse verrucae 

 that are semicircular to oval in cross section 

 and are from 2 to 6.5 jx in maximum diam- 

 eter. The verrucae are generally so closely 

 spaced that they almost touch at their bases. 

 The spore coat is about 1.5 ( u thick. Dimen- 

 sions (10 specimens) : size range, 26.1 to 

 35.7 ix in maximum diameter; median, 29.4 ix. 



Holotype. — Plate 4, figure 10; negative 

 5876; Trivoli Cyclothem, maceration 1175-G, 



