58 



PLATE 6 

 Megalopteris and Lesleya 



Figure 



1 Megalopteris fasciculata Lesquereux 

 holotype USNM lYJOh scale 1:1 

 (Port Byron, IL) 



2 same as fig, 1 scale 5:1 



3 Megalopteris dawsoni (Hartt) Andrews 

 ISM 1+16525 scale 1:1 



k Megalopteris ovata Andrews 



ISM I+I652U scale 1:1 



5 Lesleya cheimarosa sp. nov. 



ISM 1+16508 scale 3:1 



