558 



STUDIES IN FOSSIL BOTANY 



South Dakota are represented by nearly iooo, more 

 or less complete trunks. 1 The Cycadophyta of the 

 American Mesozoic rival in pala:ontological value the 





Flu l^.—Cycadcoidca marylandka.~T\& earliest described American fossil Cycad. 

 From an original daguerrotypc. Nearly thirty young fruits are marked in the 

 present view by the groups of bract-scars interpolated between the old leaf-bases. 

 About : ] natural size. From Wieland. 



gigantic Saurian animals, with the remains of which 

 they are often associated. Fig. 1 99 represents the 



1 Sec Wieland, American Fossil Cycads, Carnegie Institution, 

 Washington, 1906, and the systematic works by Lester Ward, there cited. 



