Prosser— 



Hamilton and Chemung Series. 



217 



fossils. The fossil if en >us layer is only about six inches in thickness, and 



contains the following species: 



1. Spvrifer mucr(yn<atus (Con.), Bill. (r) 



2. Spirifer mesastrialis, Hall (?). (rr) 

 '.). Spirifer fimbriatus (Con. ), Bill. (it) 



4. Chonetes setigera, Hall. (rr) 



5. Chonetes lepida, Hall. (rr) 

 <i. Stroplieodonta ( Leptost/rophia) ef. perplana (Con.), Hall, (r) 



7. I/ingula, sj>. (rr) 



8. Goniophora ffamiltonensis, Hall. (rr) 

 H. Palceoneilo const/ricta (Con.), Hall. (rr) 



XXIT A 9 . Above the second falls the rocks are much more generally 

 covered by soil than below. In the occasional exposures of shales and sand- 

 stones for the next 130 feet an occasional specimen of Tropidolephos carinahis 

 (Con.), Hall, and one or two other species were noticed. At 420 feet above 

 Schenevus creek is a stratum of irregular sandstone, with partly concre- 

 tionary structure, similar to those which occur not infrequently in the upper 

 portion of the Middle and Upper Devonian in eastern central New York. 

 The structure of this stratum may be similar to that noted by Clarke in 

 Chenango and Ontario counties, 1 except that this is not stained red, inasmuch 

 as it is considerably below the lowest of the red rocks. Shales of bluish and 

 olive color occur both above and below the sandstone stratum. The shales 

 and sandstone contain a few fossils, Cyrtina Hamiltonensis, Hall, being abun- 

 dant in a thin layer. The other species collected are : 



2. Spirifer mucronatois (Con.), Bill. (rr) 



3. Tropidoleptus carvnatus (Con.), Hall. (r) 



4. TAorhynchus, sp. (r) 



Small and imperfectly preserved specimens. 

 Fifteen feet above the concretionary stratum is a layer containing Lio- 

 rhynchus. For the next 195 feet to the east and west highway, the rocks are 

 mostly covered ; w hich is also true for the additional 1ST) feet when the top 

 of the divide between the Whitney and Morehouse brooks is reached. This 

 divide is approximately 815 feet above the level of Schenevus, or over 2,000 

 feet above sea level In this section the Ithaca formation is scarcely exposed, 

 the upper part of the brook and the hill slope being deeply covered by drift. 

 Spirifer mesastrialis, Hall, was found loose in the brook below the cast and 

 w est highway. The Sherburne formation contains a number of thin layers in 



1 Thirteenth Annual Report State Oeolojist [New York], p. 538 Bulletin No. Hi, United States Oeologienl Survey, |>. 38. 



