Preliminary Notes on Cincinnatian and Lexington Fossils 291 
part of theWaynesville bed. In consists chiefly of Columnari a with 
occasional localities in which T etradium is common, and extends 
from the western edge of Henry county, in Kentucky, as far as the 
northwestern edge of Nelson county. This may be called the 
Fisherville coral reef, since one of the typical exposures occurs 
along the railroad west of Fisherville, and another on the road 
from Fisherville to Jefferson town. 
The most diligent and effective student of the vertical distribu- 
tion of Richmond fossils undoubtedly has been Dr. George M. 
Austin of Wilmington, Ohio. To him the writer has been in- 
debted in ways too numerous to mention. Recently it has become 
evident that the Waynesville bed includes several very distinct 
divisions to which it would be convenient to assign names. These 
divisions have been worked out in collaboration with Dr. Austin, 
and are founded largely on his labors. Three divisions have been 
adopted in the present paper, in descending order: 
Blanchester division. 
Clarksville division. 
Fort Ancient division. 
The Blanchester division includes all between the upper and 
lower Hehertella insculpta horizons and is typicall}/ exposed along 
Stony Hollow, northwest of Clarksville, but is well exposed also 
a mile west of Blanchester, from which the name was selected. 
At the lower Hehertella insculpta horizon, Catazyga headi, and 
Dinorthis carleyi-insolens, occur at various localities. Stropho- 
mena nutans, Strophomena neglecta, and a precursor of Stropho- 
mena vetusta occur over wide areas and usually in considerable 
abundance in the middle layers of this division. Rhynchotrema 
dentata occurs in the upper one of two layers in which an abun- 
dance of Rafinesquina is present, chiefly turned up on edge. 
A ustinella scovillet occurs in the corresponding division at Ore- 
gonia, Ohio, 5 feet below the UL^i^er Hehertella insculpta horizon. 
It is the richest part of the Waynesville bed in the variety of its 
fauna. East of the Cincinnati geanticline the Blanchester fauna 
may be traced as far south as Owingsville, Kentucky, although 
the lower Hehertella insculpta layer cannot be traced beyond 
Adams county, Ohio. On the western side of the geanticline the 
fauna has been traced as far south as Canaan, Indiana, although 
Dinorthis carleyi-insolens has not been found south of Franklin 
county. 
