340 NEW YORK STATE MUSEUM 



Whether or not the Bohemian and Naples types are con- 

 generic, I do not hesitate to place them in the same ancestral 

 group, though recognizing in Protolepidodendron 

 scharianum a form probably more primitive and ancient 

 than Archaeosigillaria primaeva. This group, 

 which contains the oldest known Lepidophytes, appears to be 

 of family rank and may appropriately be given the family name 

 Protolepidodendreae. 



