NORTHERN END OF THE HELDERBERG PLATEAU 55 



5 Strophonella cavumbona (Hall) H. & C. (it) 



6 Orthothetes woolworthanus {Hall) H. & C. ,(rr) 



7 Meristella laevis (Van.) Whitfield (c) 



8 Nucleospira ventricosa Hall (r) 



9 Parazyga deweyi (Hall) H. & C. (it) 



10 Trematospira globosa Hall (r) 



11 Uncinulus vellicatus (Hall) H. & C. (r) 



12 Rhipidomella oblata (Hall) H. d C. (r) 



13 Cypricardinia lamellosa Hall (rr) 



14 Platyceras ventricosum Con. (rr) 



15 P. retrorsum Hall (?) (rr) 



16 Dalmanites pleuropteryx (Green) (rr) 



17 Favosites conicus Hall (rr) 



18 F. sphaericus Hall (rr) 



19 Streptelasma strictum Hall (rr) 

 Above the house on the eastern side of the brook the top of the 



Becraft limestone, capped by the Oriskany sandstone, is well 

 shown. The shaly limestone may also be seen to excellent ad- 

 vantage along the banks of Black creek to the north of the Indian 

 Ladder road. 



Feet 



A 8 Oriskany sandstone occurs in the woods on top 1=973J 

 of the hill south of Indian Ladder cliff, where 

 there are numerous very fossiliferous, more or 

 less weathered blocks. Again it is well shown to 

 the east of this hill on the ridge west of the house 

 and brook mentioned above. Its thickness in 

 these outcrops varies from 1 foot to 1 foot, 4 

 inches. 



A 9 Esopus shale; finely exposed along the road to the 100=1073J 

 east of the brook and house. Another excellent 

 exposure occurs in the glen to the east of the 

 eastern north and south road which on the 

 plateau connects the Indian Ladder and New 

 Salem roads. 

 A 10 Schoharie grit; shown on a south road at the base 3^=1077 

 of the light gray Onondaga limestone. 



