GEOLOGY AND PALEONTOLOGY OF THE SCHOHARIE VALLEY 265 



This ledge is in the woods where it forms a cliff 30 feet high. The 

 dip is between H° and 2 C s. 70° w. The rocks contain abundant 

 Hamilton fossils and belong near the middle part of the formation. 

 The following fauna was obtained: 



1 Spirifer mueronatus (Con.) Bill, c 



2 S. granulosus (Con.) H. & C. rr 



3 Athyris spiriferoides (Eaton) Hall c 



4 Camarotoechia congregata (Con.) H. & C. r 



5 Microdon (Cypricardella) tenuistriatus Hall (?) rr 



Imperfect and worn. 



6 Cbonetes mucrouatus Hall c 



Specimens larger than the figures of this species. 



7 Cbonetes defleetus Hall c 



8 Palaeoneilo tenuistriata Hall rr 



9 Maerodon hamiltoniae Hall rr 



10 Grammysia bisuleata (Con.) Hall r 



11 Tellinopsis subemarginata (Con.) Hall rr 



12 Pterinea flabellum {Con.) Hall rr 



13 Cyrtolites (Cyrtonella) pileolus Hall rr 



From the top of this ledge for 135 feet to the sckoblhouse at the 

 road corners there are occasional outcrops of arenaceous shales, 

 and then for 305 feet along the road and brook the rocks are 

 mostly covered. By the side of the highway just above the house of 

 Mr George P. Bouck and about one mile above the river road is an 

 outcrop of from 8 to 10 feet of Hamilton shales (C 4 ). Those at 

 the base are rather fine but the upper ones are coarser. The shales 

 are mainly argillaceous and contain numerous Hamilton fossils. 

 The list is : 



1 Spirifer mueronatus (Con.) Bill, r 



2 Cryptonella (Eunella) lincklaeni Hall c 



3 Athyris spiriferoides (Eaton) Hall rr 



4 Productella dumosa Hall (?) rr 



5 Camarotoechia prolifica (Hall) H. & C. rr 



6 Goniophora hamiltonensis (Hall) Miller rr 



7 Nuculites oblongatus Con. rr 



8 Palaeoneilo eonstricta (Con.) Hall rr 



9 Ciinitaria elongata (Con.) Hall (?) rr 



Tin perfect. 



10 Actinopteria boydi (Con.) Hall c 



75 feet higher and 755 feet above the Schoharie river are very 

 thin, bluish, argillaceous shales (C 6 ). In a layer of somewhat 

 coarser shales is an abundance of specimens of Nyassa 

 arguta Hall; while a little higher are some thin layers of 

 concretionary sandstone. These shales are referred to the llamil 

 ton formation and the following fossils were collected. 



1 Cryptonella (Eunella) lincklaeni Hall c 



2 Athyrlsspiriferoid.es (Eaton) Hall a 



Abundant in a layer of thin, shaly rock. 



3 Camarotoechia prolifica (Hall) If. <C- O. a 



Abundant in same layer as above. 



4 Spirifer mueronatus (Con.) Bill, rr 



