/*V 



1. Skull of Erpetosaurus minutus Moodie, from the Cannelton slates of Pennsylvania. 



Original in U. S. National Museum. Enlarged X 3.3. 



2. Skull and anterior part of body of Ptyonius pectinatus Cope, from the Coal Measures of 



Linton, Ohio. Original in U. S. National .Museum. X 1. 



3. Skeleton oV Eosauravus copei Williston, from the Coal Measures of Linton, Ohio. "The 



oldest known reptile from North America" and closely related structurally to the 

 Microsauria. Original in U. S. National Museum. X 1. 



4. Part of the ventral scutellation and ribs of Sauropleura digitata Cope, from the Coal 



Measures of Linton, Ohio. Original in American Museum of Natural History. X 1. 



