PTERIDOPHYTA 



239 



Fig. 196. Portion of restoration of Carboniferous swamp forest in the Chicago Natural 

 History Museum, showing trunks of Sigillaria rugosa (to left) and Sigillaria saitlli (to right), 

 and cones of Lepidostrohns ovatifolius (upper left) ; also two seed ferns: Neuropteris decipiens 

 (right center) and Neuropteris heterophylla (below). 



