18 PENNSYLVANIA AND NEW YORK. DEVONIAN. [bull. 120. 
Genesee shales flanked by the Chemung and Portage. In describing 
this outcrop Mr. Winslow said: "South of Lock No. 7, the Genesee 
shales are exposed for over a mile to below Lock No. 9 at VVeissport. 
Their fissile and broken character is well shown here; in places they 
are so black that the rock looks more like weathered coal or highly 
carbonaceous shale," 1 while it is further stated that " shells are nu- 
merous in the Chemung and Genesee outcrops (vm) near Weissport. 2 " 
The thickness of the Genesee is given as 200 feet by Prof. White on the 
Lehigh River, 3 and the Hamilton as 760 feet. 4 
The exposures at Lehighton and Weiss port were carefully studied, 
after the Hamilton of Pike and Monroe counties, Pa., and eastern New 
York had been examined, in order to determine whether the zone called 
the Genesee of that region agreed any more closely with the Genesee of 
New York, than the beds of northeastern Pennsylvania, which had 
been referred to that stage. A highway cut, No. 1481 A 1, opposite the 
bridge across the Lehigh River between Weissport and Lehighton, and 
just below the Lehighton Station of theLehhigh Valley Railroad, affords 
an excellent opportunity to study the so-called Genesee of that region. 
The exposure consists mainly of oluish to bluish -black, argillaceous 
shales, which contain fossils in considerable abundance. In litho- 
logic character, the deposit agrees closely with the similar zone 
further to the northeast; but the fauna is not that of the Genesee 
shales but of the argillaceous Hamilton shales as will be seen by refer- 
ring to the list of species; some of the most common forms being 
Spirifera mucronata (Con.) Bill., and Tropidoleptus carinatus (Con.) 
Hall. A short distance up the street and under the blackish shale is a 
stratum with large numbers of Bryozoa, Crinoidal stems etc., similar 
to the zone called the " Tully limestone " on the Bushkill creeks. The 
highway cut, through this argillaceous shale was made in 1890 when 
the river bridge was built, and is just above the exposure on the 
Lehigh Valley Railroad which was described by Prof. White as the 
Genesee, 5 
Fauna of No. 1481 Al. 
Spirifera mucronata (Con.) Bill (aa) 
Spirifera fimbriata (Con. ) Hall (rr) 
Tropidoleptus carinatus (Con. ) Hall (c) 
Chonetes mucronata Hall ( ?) (a) 
Homalonotus de kayi (Green) Emm (r) 
Pbacops rana (Green) Hall (rr) 
Dalmanites (Cryphseus) boothi (Green) Hall (rr) 
Microdon (Cypricardella) bellistriatus (Con. ) Hall (rr) 
'Sum. Desc. Geol. Penn., Vol. II, p. 1371. 
2 Ibid., p. 1385. 
•G 6 , pp. 80, 81 : On page 109 it is stated that "the thickness of the group [Geuesee] seems to remain 
constant at about 200 feet, from the eastern- line of the district clear through to the Lehigh River in. 
Carbon County.'' 
"Ibid., pp. 80, 81. 
6 G S , p. 108. 
