REPORT OF THE STATE PALEONTOLOGIST I903 197 



limestone. The lower portion has considerable chert; it is charac- 

 terized by an abundance of Orthothetes woolworth- 

 anus, Stropheodonta becki, Spirifer cyclop- 

 terus, S. macropleura, Delthyris perlamel- 

 1 o s a , etc. The most abundant species in the middle beds are 

 Orthothetes woolworthanus, Strophonella 

 radiata, Delthyris perlamellosa; no other Spirifers 

 are noted. The upper beds contain many specimens of Spirifer 

 cyclopterus, S. concinnus, Uncinulus camp- 

 be 1 1 a n u s and Aspidocrinus scutelliformis, and 

 numerous specimens of Gypidula pseudogaleata. A 

 few of Delthyris perlamellosa are here noted but none 

 of Spirifer macropleura. 

 Becraft 40 feet 



A coarsely crystalline limestone. The fauna of this is identical 

 with that of the upper New Scotland with the exception of a rela- 

 tively greater abundance of the species above noted and the non- 

 occurrence of Spirifer cyclopterus. 

 Port Ewen 1 10-200 feet 



Silicio-argillaceous limestone. The lowermost beds gave the fol- 

 lowing abundant species : Leptaena rhomboidalis, 

 Orthothetes woolworthanus, Dalmanella per- 

 elegans, Delthyris perlamellosa, Spirifer 

 concinnus, Rhipidomella oblata, Meristella 

 1 a e V i s , etc. In the upper beds were noted^ : P h o 1 i d o p s 

 ovata, Rhipidomella oblata, Stropheodonta 

 becki, Coelospira con cava, Spirifer niodes- 

 tus, Cypricardinia lamellosa, Tentaculites 

 elongatus, Homalonotus vanuxemi, Phacops 

 logani, Dalmanites pleuroptyx, etc. 

 Oriskany 30-70 feet 



The lower portion is a pebble bed 6-18 feet 



The upper portion consists of alternating sandy and cherty lime- 

 stones 20-50 feet 



'Clarke. Oriskany Fauna of Becraft Mountain. N. Y. State Mus. Mem. 

 3. T900. p. 73. 



