204 



Report of the State Geologist. 



specimens of the smaller Hamilton fossils. The following species were 

 collected : 



1 . Chonetes scitida, Hall. (rr) 



'2. Spirifer mucronatus (Con.), Bill. (rr) 



3. Tropidohptus riiriiHitii* (Con. », Hall. (rr) 



4. Orthis Van luemi. Hall. (r) 



5. Xneulites triqueter, Con. (rr) 



Maryland. 



This township lies to the east of Milford and south of Westford town- 

 ships. Topographically it consists of very steep high hills separated by narrow 

 valleys, giving the township a very rugged surface. Along its western side 

 is Cramhoni mountain, a steep and high hill, while Schenevus creek fl<>\v> 

 from the northeast to the southwest diagonally across the township, and 

 south of it is another steep hill. 



XXII C' 2 . A ledge of thin argillaceous shales is excellently exposed 

 by the side of the street in the northeastern part of the village of Schenevus, 

 t<> the east of Smoky Hollow brook. The road-cut reveals twenty feet of 

 the shales, the base of which is perhaps 120 feet above the level of Schenevus 

 creek. The shales have rather sharp edges, are of very dark blue to blackish 

 color, and in lithologic characters resemble quite closely the thin shales of the 

 Ludlowville and Moscow divisions of western Xew York, or the so-called 

 " Geiies^ -hales" (which are of upper Hamilton age) in northeastern Penn- 

 sylvania. 1 



These shales contain an abundance of characteristic Hamilton fossils and 

 furnish < me of the best localities for collecting noted in the eastern part of 

 Otsego county. The following species were obtained: 



1. Spirifer granulosus (Con.), Hall. (r) 



2. Spirifer mucronatus (Con.), Bill. (c) 



3. Spirifer Tullin.% Hall. (c) 



4. Spirifer fimbriates (Con.), Hall. (rr) 



5. Athyris spiriferoides (Eaton), Hall. (c) 

 tj. ( 'honete* coronata (Con.), Hall. (e) 



7. Ambocodza umhonata (Con.), Hall. (c) 



8. Tropidohpl us i-ariiiatus (Con.), Hall. (a) 



9. Oyrtma Hamiltonensis, Hall. (rr) 



i See Bulk-tin No. 120, United Stales Geological Survey; The Devonian system of eastern Pennsylvania and Xew York. pp. 

 3C, 71, etc., for a discussion of the correlation of the fossiliferous shales in northeastern Pennsylvania. 



