8 PENNSYLVANIA AND NEW YORK DEVONIAN. [bull. 120. 
from a few feet to over 50 feet in thickness, the outcrop of which crosses 
the middle counties of New York State from Ontario to Chenango 
counties, but it is not clearly recognized in the sections south of New 
York." 1 
No. 1475 04. — About one-fourth mile farther north than the outcrop 
of the coral zone the road crosses Brodhead Creek, and under the 
bridge, as well as along the west bank of the creek below the bridge, 
are exposures of rather fine argillaceous shales of bluish color and 
moderately fossiliferous. 
Fauna, of No. 1475 C4. 
Nuculites triqueter Con (rr) 
Phacops rana (Green) Hall (rr) 
Palseoneilo sp., a broken specimen; probably P. constricta (Con.) Hall (rr) 
Leiorkynchus niulticosta Hall (rr ) 
(? ) Crania, imperfect specimen of possibly C. bamiltonias Hall Crr) 
(?) Streptorbynchus sp., broken specimens of wkat are apparently S. cke- 
mungensis (Con.) Hall, agreeing most nearly witk var. arctostriataHall (rr) 
Ortkonota ( ? ) parvula Hall (rr) 
Tke proportions and otker ckaracters of tke skell agree perfectly witk 
tke description and figures of tkis species. 
( ? ) Modiomorpka mytiloides (Con.) Hall (rr) 
Two valves of small Lamellibranck, wkick are possibly tkis species. 
( ? ) Productella sp., two small impressions (rr) 
Ckonetes deflecta Hall (?) (rr) 
Not clearly preserved, but tke spines along tke kinge line are distinct. 
Loxonema sp., only one perfect volution ; but probably L. kamiltonke Hall. . . (rr) 
Lmgula sp (rr) 
Grammysia sp (rr ) 
Ortkoceras sp (rr) 
Fragments of two skells belonging to tke Pectinidae (rr) 
Crinoid stems (c) 
This outcrop is one of the typical exposures of Genesee shale men- 
tioned by Prof. White, who says: "The Genesee slate outcrop crosses 
Brodhead Creek at the road crossing, 1J miles below Spragueville, 
where it is seen as a bluish-black, sandy slate, dipping quite rapidly to 
the northeast." 2 
From the above list of fossils it will be seen that the fauna is not 
that of the Genesee shale, but of the Upper Hamilton. Moreover the 
shales have no lithologic resemblance to the typical Genesee of central 
and western New York, and the same criticism applies to this correla- 
tion that has already been made in reference to the coral zone, or 
so-called Tully limestone. In reference to the eastern extension of the 
Genesee shale in New York, Vanuxem said: "The Genesee slate was 
not distinctly recognized east of the town of Smyrna, in Chenango 
County, probably owing to intermixture with sandstone, and its fossils 
not having been noticed." 3 But under the description of Chenango 
County it is mentioned at North New Berlin. 4 In 1883 the writer 
1 Bull. Geol. Soc. Am., Vol. I, 1890, pp. 489, 490. 
2 G 6 , p. 271 ; also see p. 108 under the distribution of the Genesee. 
3 Geol. of New York, Pt. Ill, p. 169. 
4 Ibid., p. 292. 
