FOSSIL GYJINOSPERMS 



135 



COEDAITALES 



The amount of information tliat has been accnmuLated con- 

 cerning this great Paleozoic group is a matter of surprise, l^ot 

 -only are the vegetative structures abundantly preserved, even in 



Fro. 94. — Cvrdaites laevis : branch (restored) bearing leaves and strobili, and also a 

 large bud. — After Grand' Eury. 



their minutest details, but the more telling reproductive struc- 

 tures are known sufficiently to indicate general relationships. 

 The Cordaitales become evident in the Silurian, and increase 

 10 



