prosser.] NEVERSINK RIVER SECTION. 47 
paleontologie cliaracter, resemble closely the horizon in Pennsylvania 
and along- the Delaware River, called Chemung by Prof. White, and by 
the writer are regarded as the continuation of that zone. 
Fauna of No. 1478 A2. 
Spirifera mucronata (Con.) Bill. (?) (aa) 
Possibly these specimens ought to be called S. mesacostalis Hall, but they 
seem to belong to the former. A few specimens show a fold in the bot- 
tom of the sinus, and it is difficult to separate them from the form of 
S. mesacostalis giveu as tig. 5 on pi. 40(Geol. Surv., N. Y., Palaeontology, 
Vol. iv, Pt. i), also see variety of S. mucronata figured by Prof. H. S. 
Williams on pi. 12, fig. 13, Bull. Geol. Soc. Am., Vol. i. 
Tropidoleptus cariuatus (Con. ) Hall (a) 
Palseoneilo constricta (Con.) Hall (it) 
Cyrtina hamiltonensis Hall (rr) 
Microdon (Cypricardella) gregarius Hall (c) 
Paracyclas lirata (Con.) Hall (rr) 
Modiomorpha subalata (Con.) Hall ( ?) (rr) 
Actinopteria boydi (Con.) Hall ( ?).m..._ (rr) 
Chonetes mucronata Hall (?) (rr) 
Chonetes setigera Hall (rr) 
No. 1478 A3. — This exposure is the Meyers quarry near the top of 
the hill, north of the highway, and about 430 feet higher than A2, or 
030 feet above the railroad level at Hose Point. The rock is mainly a 
bluish-gray flagstone separated by partings of shale, and the sandstone 
is quarried for flagging. An occasional stratum of sandstone shoAvs a 
slight reddish tint, while in some of the shale are masses of fern stipes 
without pinnules, and possibly some of Psilophyton. Somewhat lower, 
on the hillside, is a ledge which has a dip of 13° between 10° and 20° 
west of north, and a northeast and southwest strike. 
No. 1478 Bl. — Just northwest of Cuddebackville, a station on the 
Snmmitville Division of the New York, Ontario and Western Kailroad, 
1 mile northeast of Rose Point, is a low hill, at the base of which are 
black, argillaceous shales with some arenaceous layers. The Snmmit- 
ville level of the Delaware and Hudson Canal is G10 feet A. T., which 
level extends from near Kose Point to Snmmitville, and these shales 
are about 45* feet higher, or with an approximate altitude of 655 feet. 
A little higher than the lower exposures, along a wood road, are 
abundant Hamilton fossils, especially Tellinopsis subemarginata (Con.) 
Hall, in association with the species which are usually common in the 
black, argillaceous Hamilton shales. It is reasonably sure, from the 
stratigraphic position, lithologic character, and the fauna, that this 
zone is the continuation of the horizon considered by Prof. White as 
" Genesee" in Pennsylvania. 
Flo. 1.— Stations along the Delaware, Lackawanna, and Western Railroad. 
Fauna of No. 1478 Bl. 
Paracyclas lirata (Con.) Hall (a) 
Nncnlites oblongatus Con (rr) 
Nucula bellistriata (Con.) Hall (rr) 
Tellinopsis subemarginata (Con.) Hall (c) 
