Weller — Kinderhook Faunal Studies. 437 



of the hill this bed is discontinuous, appearing as lenticular 

 limestone masses in the shale. The upper surfaces of these 

 masses occupy a similar horizon but their lower surfaces are 

 irregular. On the opposite side of the hill above the rail- 

 road cut, this layer is a continuous limestone band, more 

 evenly bedded and with innumerable fossils in a better state 

 of preservation. The age of this limestone is shown by 

 the fauna to be early Mississippian, so demonstrating the fact 

 of a long interval between the time of its desposition and that 

 of the subjacent shale. Ulrich has given the name Glen 

 Park Limestone to this formation.* Another exposure of the 

 bed, containing the same species of fossils, is seen at a lower 

 level by the side of the railroad, just north of Sulphur 

 Spring station, and it doubtless occurs elsewhere in the neigh- 

 borhood. 



Thickness, 1 foot, 3 inches. 



5. Sandy shale layer. Above the railroad cut this is a 

 continuous bed of similar texture, but on the quarry side of 

 the hill, where the oolitic limestone is not a continuous bed, 

 this layer apparently rests immediately upon the shaly bed 

 No. 3 between the lenticular limestone masses, so that these 

 limestone masses appear to be imbedded in and entirely sur- 

 rounded with a common shaly formation. 



Thickness, ± 4 inches. 



6. Yellow, fine grained sandstone, becoming brown upon 

 the weathered surface, to which Ulrich has given the name 

 Bushberg sandstone. f No fossils have been observed. The 

 full thickness is exposed only above the railroad cut. 



Thickness, 14 feet. 



7. Hard, somewhat crystalline, yellow or gray limestone. 

 Fossils present but not abundant, the genera Spirifer, Pro- 

 ductus, Athyris and Platycerasheing recognized. The fauna 

 is hardly sufficient for diagnosis, but considering the fauna of 

 the beds above, it can be definitely referred to the Kinder- 

 hook. 



Thickness, 4 feet. 



* Loc. cit., p. 110. 

 t Loc. cit., p. 110. 



