106 PALEOZOIC PALEONTOLOGY. 
teria decussata, are, normally, members of the fauna of the Hamilton 
beds in New York. The deposition of this formation was, without 
doubt, essentially contemporaneous with the deposition of the Onon- 
daga limestone in the Delaware valley and in New York, it being 
composed of the arenaceous shore deposits, while the limestone was 
deposited in somewhat deeper water, at a distance from the shore line, 
in the same basin of sedimentation. 
MONROE SHALES. 
This formation, like the last, is restricted in its distribution to 
the Green Pond mountain region. It consists of a series of more or 
less siliceous or argillaceous shales of a dark color, which have been 
crushed and sheared to such an extent that the lines of bedding and 
the organic remains are frequently obliterated. Fossils never occur 
in abundance, and those which are found are almost always badly dis- 
torted and imperfectly preserved. The estimated thickness of the 
formation is from 700 to 1,000 feet. 
Locality 87 A.—This locality lies one and one-half miles from the 
southern extremity of Greenwood lake, at the side of the road along 
the west shore of the lake. The following species have been identified : 
1. Orthothetes chemungensis (Con.). 
2. Chonetes sp. undet. 
3. Tropidoleptus carinatus (Con.).? 
4. Ambocelia umbonata (Con.). 
5. Anoplotheca acutiplicata (Con.).? 
6. Strophostylus sp. undet. 
7. Phacops rana (Green). 
(oe) 
. Dalmaniies sp. cf. D. anchiops (Green). 
Locality 106 A.—A short distance southwest of West Milford the 
two following species were collected: 
1. Tropidoleptus carinatus (Con.). 
2. Actinopteria sp. undet. 
Locality 104. A.—Vhis locality is in the woods, west of the road, a 
little over one-half mile north of the Clinton reservoir, north of New- 
foundland. The following species were collected: 
. Crinoid stems. 
. Chonetes coronatus (Con.) ? 
Camarotechia sappho Hall. ? 
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