MEMOIRS 



OF THE 



GEOLOGICAL SURVEY OF INDIA, 



On the occurrence of Ammonites^ associated with Ceuatites^ and Gonia- 

 TiTES in the Carboniferous deposits of the Salt Range,., hy William 

 Waagen, Ph. D., Geological Survey of India. 



During my late geological tour in the North- Western Panjab and 

 the Frontier Districts, my principal duty consisted in determining the 

 relations of the rocks, there represented, with European formations. Such 

 studies can only be based upon palseontologieal investigation, which wiU 

 alone be able to solve questions about the relative ages of the rocks in 

 distant countries. Thus, it was necessary for me to direct my principal 

 attention towards collecting fossils according to their different strati- 

 graphical horizons, and the result has been that several remarkable and 

 unexpected palEeontological facts have come to light, besides the general 

 geological results. 



One of the former is the discovery of specimens of three well known 

 genera of Cephalopodous Mollusks, GoniatiteS, Ceratites, and Ammo- 

 nites, all together in a Umestone bed of about one foot and a half 

 in thickness, in the lower half of the upper division of the (?) carboni- 

 ferous formation in the society of unmistakable Producti, Athyris, etc. 



The locality whence I extracted those fossils with my own hands 

 out of the rock, is near Jabi north of Shahpoor, on the southern slope of 

 the Salt Range. The rocks at this locality are, however, not well 

 adapted for tracing out an extensive section, because the grou»d is greatly 

 broken up and faulted in every direction. Ascending the mountain 



( 351 ) 



Mem. Geo!. Surv. of Imlia, Vol. IX, Art. 4. 



