REPORT OF THE STATE PALEONTOLOGIST 1902 1163 



the Heard quarry. The upper portion of the Kondout is com- 

 posed of thin layers of impure limestones. The total thickness 

 of the Kondout as determined at this section is 45 feet. 



Manlius formation. The lower portion of the Manlius is similar 

 in appearance to the upper portion of the Rondout and gradually 

 changes to the characteristic blue layers. The blue layers carry 

 the typical Manlius fauna. In some of the layers fossils are 

 exceedingly abundant, while in others they are rare. Some 

 slabs contain an immense number of Spirifer vanuxemi 

 and others contain equally large numbers of Leperditia 

 alta. Tentaculites gyracanthus, so plentiful in 

 the Helderberg section, is not found abundantly at Manlius. 

 The Stromatopora bed of the Manlius occurs at the top of these 

 blue layers just below the lower cement bed. In the eastern 

 sections the Stromatopora bed is near the top of the Manlius 

 not far below the Coeymans limestone. The thickness of the 

 Manlius limestone up to the cement bed is 65 feet. 



The cement bed which follows the Stromatopora bed is 4 feet 

 thick. No fossils have been observed in this layer. Above this 

 cement bed is a layer of blue limestone 4 feet thick. Spirifer 

 vanuxemi and Leperditia alta were obtained from 

 this bed. The limestone is followed by another layer of cement 

 4 feet thick. Mr Luther records the finding of a segment of a 

 Eurypterus from this upper cement bed in the quarry at Split 

 Rock, south from Syracuse. The section above the cement beds 

 can be observed in this vicinity but not so advantageously as in 

 the hill east of Manlius. 



Section in the hill east of Manlius village 



The lower part of the Manlius limestone is not well exposed. 

 It can be seen however at the cut of the Chenango branch of the 

 West Shore Railroad northwest from the station. In this cut 

 there is a brecciated layer of limestone 1 foot thick. The rock 

 in this cut and in the outcrops in the fields above is very fossili- 

 ferous. The two layers of cement are well exposed in this hill 

 where they are extensively quarried for cement. Above the 

 upper cement bed there is an irregular layer of limestone 14 

 feet thick. In lithologic features it closely resembles the 



