1124 NEW YORK STATE MUSEUM 



Jones, originally described from the Cobleskill or " Bullhead 

 rock " of Erie county. 



At the extreme northern end of West mountain, scarcely a mile 

 southeast of Central Bridge, the Cobleskill is exposed in the bed 

 of a small stream. Fossils were obtained as follows : 



1 Favosites niagarensis ? Hall 



2 Enterolasma caliculus Hall 



3 Thysanocrinus sp. 



4 Camarotoechia neglecta Hall 



5 Rhynchonella ? lamellata Hall 



6 Spirifer crispus var. corallinensis Grabau 



7 Stropheodonta bipartita Hall 



8 S. textilis Hall 



9 Whitfieldella nucleolata Hall 



10 Tellinomya aequilatera Hall 



11 Bellerophon auriculatus Hall 



There are no favorable exposures of the Cobleskill on the east 

 side of the Cobleskill valley, but on the west side at Howes Cave 

 it is finely exposed. At Howes Cave fossils are not readily ob- 

 tained. The following were collected by the roadside near the 

 old tunnel leading to the cement mine. 



1 Favosites niagarensis? Hall 



2 Stromatopora concentrica Hall 



3 Rhynchonella ? lamellata Hall 



4 Spirifer crispus var. corallinensis Hall 



5 Whitfieldella nucleolata Hall 



6 Ilionia sinuata Hall 



7 Tellinomya aequilatera Hall 



Well up in the cement bed above the Cobleskill at Howes Cave 

 the following species were found. 



1 Favosites niagarensis? Hall 



2 Rhynchonella ? lamellata Hall 



3 Spirifer crispus var. corallinensis Qrabau 



One mile northeast of Howes Cave the Lorraine is exposed in 

 the bed of a small creek for a considerable distance. Above these 

 the Sal in a shales are also exposed, affording a fine section well 



