12 PALEOZOIC PALEONTOLOGY. 
stone or calcareous sandstone and shales. This limestone formation 
has a great thickness, which is estimated at from 2,700 to 3,000 feet. 
It is designated the Kittatinny limestone * because it is the great lime- 
stone formation of the Kittatinny valley, where it occupies extensive 
areas. It is also present in all of the outlying areas. Like the 
Hardyston quartzite, this limestone formation was doubtless at one 
time continuous across the area now occupied by the crystalline high- 
Jands, and has been eroded. It is continuous across Pennsylvania, 
where it has been described as the Great Valley limestone, No. II.,f 
and across Maryland and the eastern part of West Virginia into Vir- 
gmia, where it is known as the Shenandoah limestone.{ The forma- 
tion also extends northward from New Jersey into New York. 
The fossil fauna of the Kittatinny limestone, so far as it is known, 
is not an extensive one. Although organic remains have been found 
at but few localities, they are sufficient to establish the age of the 
formation as Cambrian for the most part. At one locality, near the 
summit of the formation, however, a fauna indicating the early 
Ordovician age of the beds containing it has been collected. 
The largest fauna of Cambrian age which has been discovered in 
the formation is that from O’Donnell and MacManniman’s quarry, 
at Newton (Locality 136 A), where the following species have been 
collected : 
Foraminifera? genus and sp. undet. 
Lingulella stoneana Whitt. 
Orthis newtonensis un. sp. 
Microdiscus? sp. undet. 
Olenellus? sp. undet. 
Ptychoparia newtonensis n. sp. 
Plychoparia 2 sp. undet. 
Anomocare parvula n. sp. 
Dikelocephalus newtonensis n. sp. 
‘This fauna is of much interest because of its similarity to some of 
the upper Cambrian faunas of the so-called Potsdam sandstone of 
the Upper Mississippi valley. The species described as Dikelocephalus 
newtonensis is the most abundant member of the fauna and is closely 
allied to D. pepinensis from Minnesota. Lingulella stoneana, which 
* That portion of it near Franklin Furnace was called the Wallkill limestone by 
Wolff and Brooks, Eighteenth Ann. Rep. U. S. Geol. Surv., pt. II., p. 443. 
+ Penn. Geol. Surv , Summary, Final Report, vol. I, p. 298. 
t Md. Geol. Surv., vol. I., p. 178. 
