Preliminary N otes on Cincinnatian and Lexington Fossils 297 
why it should not occur in the Wilmore bedj but I have never seen 
it from that horizon. 
For the convenience of those who desire a ready abstract of the 
classification here in use, the following table is added. 
Series. 
Cincinnatian 
Upper Mohawkian 
Formations. 
Richmond . 
Maysviile 
Eden. .... 
Utica. .... 
Cynthiana 
Lexington 
Beds. 
Elkhorn 
Whitewater 
Saluda 
Liberty 
<{ Waynesville 
Blanchester division 
Clarksville division 
Fort Ancient division 
Arnheim 
Mount Auburn 
Corryville 
« Bellevue 
Fairmount 
Mount Hope 
f McMicken or Paint Lick 
Southgate 
[ Economy 
Fulton t 
f Nicholas 
< Greendale 
[ Perryville 
Paris 
Wilmore 
] Logana 
[ Curdsville 
In this classification the Rogers gap beds appear to belong 
between the typical Economy and the typical Fulton beds, but 
require further study before their exact limits are defined. A 
similar statement might be made also of the Point Pleasant beds, 
which belong below the Orthorhynchula horizon along the Ohio 
river which is definitely recognized as Greendale, and which 
probably belong above the Paris bed, but which require further 
study. 
