﻿Bulletin 19 58 



many well preserved Eurypterus remains. Doubtless the fact 

 that occasionally fragments of this genus are found in the beds 

 just beneath the Cobleskill has seemed to call for and give color 

 to the hypothetical "anticline". But all know how Eurypterus 

 may be found much lower in the Salina and much higher in the 

 Manlius in this State. 



"Salina" Waterlime. — At several localities near Union Springs 

 where the Cobleskill limestone is exposed there are shown below, 

 layers of thin-bedded, light gray or buff colored impure limestone. 

 Howland's Pt., north of the exposure in the woods near O'Con- 

 nor's quarry, Wooley's quarry, and Thompson quarry, all 

 show these calcareous layers, and when diligent search has been 

 made, show practically the same fauna. They are best ex- 

 posed at Thompson quarry already described. Lingula, Euryp- 

 terus, Cyclonema, Modiolopsis dulrius, Murchisonia, Spirifer eri- 

 ensis, Rhynchonella agglomerata f and Leperditia alia afe per- 

 haps the most characteristic forms. 



Cobleskill. — The study of this stage, or substage, of the Manlius, 

 according as we prefer to look at it, has been undertaken by 

 Hartnagel and has been published in the Report of the State 

 Paleontologist for 1902, and hence little attention need be given 

 it here. Its stratigraphic relationship to other beds in this vi- 

 cinity, as well as its places of outcrop can be seen by inspecting PI. 2 . 

 The presence of Stromatopora in large and irregular masses gives 

 the beds of this horizon a peculiarly rough appearance. For an 

 exhaustive list of species occurring in these beds, see pp. 

 1 132-33 of Hartnagel's paper. 



Rondout. — Sect. 2, PI. 3, shows fossiliferous beds above the 

 Cobleskill which have been referred to the Rondout division of 

 the Manlius s'tage. Orthothetes interstriatus and Whitfieldella 

 sulcata are locally extremely abundant. Just what follows above 

 these beds we have as yet found no section to show. But know- 

 ing from leveling that the vertical distance from the Cobleskill 

 to the Oriskauy is about 70 feet, and knowing the section in 

 Union Springs from the Oriskany horizon downward for 64 feet, 

 there can be but a very limited section not yet seen. 



In tlie detailed section given below, we would refer the beds 

 numbered from 9 to 18 inclusive to the Rondout. In 

 its main features the section is repeated in Sect. No. 5, PI. 3. 



