208 



Report of the State Geologist. 



.V little higher on the highway is quite a prominent concretionary sand- 

 stone, like the strata noted at other localities in the Ithaca formation. This 

 fauna and irregular lithologic structure occur at what may be considered the 

 base of the Ithaca formation in this section. About sixty feet above its base 

 by the roadside is an old stone quarry, which has been worked to some 

 extent for building stone. The shaly partings are quite fossiliferous, and 

 several good specimens of Spirifer mesastrial i* were found. The fauna and 

 stratigraphic position of this zone are considered to indicate that it clearly 



belongs in the Ithaca formation as it is developed in the eastern part of 

 Otsego county. The species mentioned below were collected here : 



1. Spirifer mesasfirictMs, Hall. (c) 



2. Paracyclas Urata (Con.), Hall. (it) 



3. TeMinopsis subemargi/nata (Con.), Hall. (rr) 



4. Xucula belli striata (Con.), Hall (r) 



5. Actiaopteria JBoydi, Con. (c) 



6. Actinopteria zeta, Hall (?). (r) 



7. Phurotomaria capillar ia^ Con. (c) 



8. Palceoneilo ernarginata (Con.), Hall. (rr) 



9. Chonetes setigera, Hall. (rr) 



10. Spi rifer mucronatus (Con.), Bill (?). (r) 



1 1. Pterinopecten suborbicula/ris, Hall (?). (rr) 



12. Phacops rana (Green), Hall. (r) 



13. Grammy sia subarcuata, Hall. (rr) 



Somew hat above the quarry a stratum of thin sandstone was seen {I 3+ ) 

 which contains some fossils; the following were obtained 



1. Tropidoleptus carinatus (Con.), Hall. (r) 



2. Spirifer mesastrialis, Hall. (rr) 



3. Spirifer mucronatus (Con.), Bill. (rr) 



4. Goniopliora Ilamiltonensis, Hall. (rr) 



XXII I*. At 260 feet above the quarry, or 680 feet above the railroad 

 level on the top of the hill by the sehoolhouse, is the base of a greenish, 

 coarse-grained sandstone, which marks the base of the Oneonta sandstone. 

 Tliis massive stone remains very near the surface, and large blocks of it lie on 

 the ground so that the country for one mile to the south has a very rocky 

 appearance. 



The above section for the hill south of Schenev us gives a thickness of 

 320 feet for the Ithaca formation and 175 feet for the Sherburne, or 4'.).") feet 

 for the two ; and at the bottom more than 185 feet of the upper Hamilton. 



