REPORT OF THE STATE PALEONTOLOGIST 1902 1187 



Dark limestone beds of upper and lower part of Manlius. 

 The fauna of these beds of similar sediments seems both below 

 and above the Stromatopora bed to be the same. 



Leperditia alta Conrad, a 

 Spirifer vanuxemi Hall, a 

 Stropheodonta varistriata Conrad, c 



Loxonema sp. ? 

 Ilionia sinuata Hall, r 



Devonic formations 



The Devonie formations exposed in the Vlightberg and on the 

 North hill are of the Helderbergian, Oriskanian and Ulsterian 

 series, ranging from the Coeymans limestone on the east to the 

 Esopus grit on the west side of the ridge. The Onondaga lime- 

 stone is not found on these ridges, but is exposed farther to th^ 

 westward on the edge of the Kingston plain. 



Coeymans limestone 



A series of heavy beds of dark gray limestone, aggregating 

 about 49 or 50 feet in thickness, is exposed along the crest of 

 the bluff on the east side of the Vlightberg and North hill, and 

 also forms a ridge of some prominence above the White lime 

 quarry overthrust, which may be traced through the woods from 

 the vicinity of Gross's quarry to beyond Terry bench mark. The 

 entire series is seen to best advantage in the Delaware avenue 

 quarry where can also be seen the abrupt lower contact with the 

 Manlius and the gradual upward transition into the overlying 

 more shaly New Scotland beds. The component parts of the 

 Coeymans limestone are as follows, in ascending order. 



20 Basal bed. 58 inches of irregular, marly limestone of dark 

 gray color, which on weathering readily breaks up into small 1 nodu- 

 lar pieces. It is full of fossils ; crinoid fragments and brachiopods 

 are common, and Lichenalia specimens of all stages of growth 

 are particularly characteristic of this zone. On weathered joint 

 planes this rock somewhat resembles the Stromatopora bed. The 

 best places to collect fossils from this bed are in the Delaware 

 avenue quarry, and on the first ridge west of the old cement 

 workings above the White lime quarry. 



