390 



This section possesses a distinct similarity to the upper part of the 

 Whitewater section exposed at Richmond, Indiana, in beiug a very nodular, 

 shaly limestone. 



Though similarity in lithology is not a conclusive proof that two 

 or more separated sections are parts of the same formation, yet the fact 

 that there is a distinct resemblance does tend to lend favor to that 

 decision. 



A detailed description of this locality is given in the following section, 

 taken from "The Stratigraphy and Paleontology of the Cincinnati Series 

 of Indiana."* 



Section Along the West Fork of Whitewater River at 

 Richmond, Indiana. 



( Number 1 is at the top of this section, i 



1. Exposures in the bank above Thistlewaite Falls on the 

 west fork of Whitewater River, about one and one-quarter miles 

 north of the National road bridge across Whitewater River. Thin, 

 lumpy limestone. Rhynchotrema dentata (aa). Several species 

 of gastropode, including Salpingostoma richmondense (c). Stro- 

 phomena sulcata (r) 8 feet. 



2. Layer in the breast of the falls. Heavier layer at the top. 

 Limestone. Monticulipora epidermata (c). Platystrophia acuti- 



lirata senex (c) . Homotrypa wortheni 5 feet 



3. West side of creek just below the falls. Bryozoa (aaa), 

 Monticulipora epidermata, etc 5 feet. 



4. Just north of the C. R. & M. R. R. bridge. Thin, shaly 

 limestone, Rhynchotrema capax, the highest specimens. Plectam- 

 bonites sericeus (rr) 5 feet. 



5. Just south of the C. R. & M. R. R. bridge. Rhynchotrema 



capax (aa) 4ft. Sin. 



6. About one-eighth of a mile north of the road bridge across 



the west fork. Ptylodictya plumaria, etc 5 feet. 



7. A short distance north of the junction of the east and west 

 forks of the river. Limestone and intercalated shale. Hallopora, 



very similar to H. rugosa. No specimens of Rhynchotrema dentata 4 feet. 



*Prof. E. R. Cumings. Indiana Dept. Geology and Nat. Resources, 32d Ann. Rept. 1907. 



