46 



PLATE 8 

 Asterotheca (ex Pecopteris ) species 1 and 2, p. 17 



Figure 



1 A. sp. 1; specimen PP 15 338; scale 1:1; under xylol. 



2 Specimen PP 15338; scale 5:1; under xylol. 



3 A. sp. 2; specimen USNM 14212; scale 1:1; under xylol. 



4 Specimen USNM 14212; scale 5:1; under xylol. 



Spores of Asterotheca sp. 1 and sp. 2 (correlated with Laeviqatosporites minutus ) 



Figure 



5 A. sp. 1; specimen PP 15338; negative 8709; coordinates 141.0 x 43.9; 

 size 19.5 x 10.4 nm; scale 1000:1 



6 A. sp. 2; specimen USNM 14212; negative 8589; coordinates 135.9 x 27.4; 

 size 19.5 x 12.0 urn; scale 1000:1. 



7 A. sp. 2; specimen USNM 14212; scale 1000:1; scanning electron micro- 

 graph. 



