THE KIMMSWICK AND PLATTIN LIMESTONES 
177 
McCune was used for the upper or Kimmswick limestone, as 
the latter term is used by Bralison in the same area. 
The term Bryant limestone includes the very fine-grained light 
blue, relatively thin-bedded, richly fossiliferous limestone, which 
not only contains a Lowville fauna but also has a Lowville as- 
pect lithologically. The type exposures are along Bryant Creek 
.in the northeastern part of Lincoln County. The total thickness 
of the Bryant limestone was estimated by Keyes as between 
140 and 150 feet. Only the top of this Bryant limestone was 
studied in Ralls County by the present writer. 
The Folley limestone includes the underlying light yellow, 
heavy, magnesian, poorly fossiliferous limestone. The type lo- 
cality is Folley, also spelled Foley, a railroad station a short 
distance north of Winfield, in the eastern part of Lincoln County, 
where the limestone is exposed in the bluffs west of the Missis- 
sippi River. The thickness of the Folley limestone was esti- 
mated by Keyes as 65 feet, but later it was recognized that the 
actual thickness is considerably greater. In Ralls County the 
Folley limestone is exposed north of the bridge 2 miles northwest 
of Frankford, on the pike to New London. 
Keyes evidently intended to use the term McCune for all of 
the distinctly granular limestone of Champlainian age occurring 
above his Bryant limestone. This would make the term McCune 
equivalent to Kimmswick in the broader sense in which the lat- 
ter is used by Branson. The type locality is near McCune sta- 
tion, about half way between Frankford and Bowling Green, in 
the northwestern part of Pike County, the exposures occurring 
on Peno Creek, directly west of town, where a long bluff lines the 
eastern side of the creek. The abundance of Receptaculites oweni 
associated with Hormotoma major suggests that the actual ex- 
posure west of McCune station is limited to the lower part of 
the upper half of the Kimmswick limestone of Branson, but 
does not rise as high as the top of the latter. Keyes at first 
assigned a thickness of only 25 feet to his McCune limestone, and 
raised this later to 50 feet, but it is known now that the Kimms- 
wick limestone of Branson reaches thicknesses varying from 100 
to 125 feet at several points in Ralls County, the county immedi- 
ately north of that in which the typical McCune outcrops occur. 
