Smith.] -^It) [Oct. 2, 



Lower Coal Measures, and even this division is often uncertain, for in 

 most cases the relations of the fossiliferous beds to each other could not 

 be determined with any degree of certainty. Also in most of this region 

 the stratigraphy is difficult ; the rocks vary so little, and are so folded 

 and faulted that by stratigraphy alone it was often impossible to locate 

 a bed within several hundred feet. 



In addition to this, the number of the siiecies is usually too small, 

 and their character too indecisive to enable one to say with certainty to 

 which division the strata belonged. Therefore, in enumerating the lo- 

 calities there are given onlj^ the character of the rocks, the fossils found 

 in them, and the place in the section where these strata are thought to 

 belong. 



Loicer Coed Measures. 



Of these localities there were seventeen discovered, and they will be 

 given in order from east to west. 



No. 1. Independence county, 11 N., 5 W., section 9, centre of the 

 section. Soft brownish sandstone with Eaomphalus {Straparollus) sp.; 

 near the middle of the Lower Coal Measures. Collector, J. C.Bran- 

 ner. 



No. 2. White county, 8 N., 7 W., section 26, Bee Rock on Little Red 

 river. Massive yellowish sandstone, over one hundred feet exposed, 

 nearly horizontal ; at the top with marine fossils, at the bottom with 

 plants. Near the base of the Lower Coal Measures. Collector, J. P. 

 Smith. 



Crinoid stems. 



Productus semireticulatus Martin. 



Spirifer rocky montanus Marcou. 



Aviculopecten carhoniferus Stevens. 



BelleropJwn sp. 



Plant remains, undetermined. 



No. 3. White county, 8 N., 7 W., section 33, east half of southeast 

 quarter, south of Norton's field, on the road from Searcy to Griffin 

 Springs. Hard yellowish and in places ferruginous sandstone, with a 

 dip of about 30° south. Horizon same as tlic last locality. Collector, 

 J. P. Smith. 



Fenestella sp. 



Orthis conf. resupinoides Cox. 



Productus semireticulatus Martin. 



Rhynchonella sp. 



Spirifer rockymontanus Marcou. 



Schizodus conf. amplus Meek and Worthen. 



Bellerophon sp. 



No. 4. White county, 9 N., 4 W., section G. Soft pinkish sandstone. 

 Near middle of Lower Coal Measure. Collector, J. C. Branner. 



