GEOLOGY AND PALEONTOLOGY OF THE SCHOHARIE VALLEY 



239 



Feet Inches 



e 4 More or less arenaceous lime mudroek similar 

 to bed 5. It is rubbly from the presence of 

 coral fragments. It is thin bedded with the 

 bedding planes well marked. Contains F. 

 h e 1 d e r b ergiae precedent, often 

 overturned. To base of quarry 1 



From the lower three beds Hartnagel obtained the following 

 Cobleskill fauna, which is thus seen to extend up into the Ron- 

 dout. 



1 Favosites helderbergiae precedens 



2 Stroniatopora cf. antiqua 



3 Cainarotoec-hia litchfieldensis 



4 Orthothetes interstriatus 



5 Camarotoeohia ? lamellata 



6 Spirifer corallinensis 



7 Whitfieldella nucleolata 



8 Pterinea securiformis 



9 Orthoceras 



10 Beyrichia 



11 Leperditia cf. jonesi 



Feet Inches 



Total exposure of Rondout 8 8 



Twenty feet higher in the field are quarried 2 feet and 6 inches 

 of dark lime mudroek, the upper 6 inches of which contain 

 Spirifer v a liuxemi, Leperditia a 1 t a , etc. The 

 rock lias a ringing sound when struck with a hammer, and be- 

 tween the layers are found occasional shaly streaks. It belongs 

 to the Manlius beds. 



3 Section of lower part of East hill at Mix and O'Reilly's quarry 



Plate 16 



The section begins at the road above the quarry and continues 

 downward to the lowest exposures near the si one crusher. 



Coeymans inches 

 h 1 Coeymans limestone, about 15 



Transition beds 



g 4-7 Covered 4-5 



g 3 Lime nindrock bed 6 



g 2 2 Covered 3 



