Strophomena and Other Fossils 
33 
remains, also may belong to that part of the Perry ville section, 
which between Harrodsburg and Danville is characterized by the 
abundance of silicified gasteropod remains. The Cornish ville lime- 
stone has not been identified here. 
About 9 miles northeast of the last locality, 4 miles north of 
Versailles, along a road reached by going from Wallace a little 
over a mile westward and then a mile and a half southward, the 
Perryville bed is represented by residual boulders of a very 
white, dense limestone containing Orthorhynchula Unneyi, Oxy- 
discus suhacutus, Isochilina jonesi, and a species of Tetradium. 
This rock resembles the very white rock at the top of the Perry- 
ville bed, but similar rock, full of silicified fossils, occurs in the 
lower part of the Perryville bed, between Harrodsburg and Dan- 
ville. The gasteropod layer also is represented, in this area, 
southwest of Wallace, by large boulders. Similar boulders occur 
2 miles southeast of Wallace, near the Mount Vernon pike, 
and 1 mile northeast of Versailles, along the railroad. 
Seven miles north of Versailles, three-quarters of a mile south- 
east of Ducker Station, the siliceous gasteropod layer varies from 
4 to 6i feet thick. It is overlaid by very white, fine-grained lime- 
stone containing specimens of Leper ditia, evidently belonging to 
the Perryville bed. This limestone is only 1 foot thick, and is 
overlaid by a foot and a half of nodular argillaceous limestone, 
which may belong to the same horizon. 
The very white limestone characterizing the upper part of the 
Perryville bed is seen also southwest of Frankfort, opposite the 
western entrance to the Taylor grounds. Loose fragments resem- 
bling the gasteropod layer are seen. These outliers of the Perry- 
ville limestone suggest an unconformity between the Lexington 
and Winchester limestones. Moreover, the gasteropod layer, if 
it represents the lower part of the Perryville bed, suggests an 
overlap of the Perryville on the Paris bed, thinning out north- 
eastward. This will account for an absence of any trace of the 
Perryville bed northeast of a line connecting Frankfort and Todd- 
ville. Hence it is not believed possible to correlate the lower, 
richly fossiliferous part of the Perryville bed, full of gasteropods, 
with the Flanagan chert of the Richmond folio. 
The upper part of the Paris bed, in Woodford, and Franklin 
counties, is a rather coarse-grained, often cross-bedded, and more 
or less phosphatic limestone. This is underlaid by a more fossil- 
