1853.] Report on t7ie Geological Structure of the Salt Range. 267 



in strata superior to the carboniferous limestone, but abound through- 

 out the older fossiliferous rocks. 



Fossils having a considerable resemblance to belemnites occur in 

 the carboniferous limestone associated with the fossils we have 

 alluded to. What they really are, we are unable to determine ; but 

 as a set of specimens were sent home to England in March, at the 

 request of Sir Eoderick Murchison, we trust soon to hear the result 

 of his examination of them. The exact determination of their nature 

 is of considerable importance, as there is perhaps not a more esta- 

 blished fact in geology than that belemnites are confined to strata 

 which succeed the trias ; abounding in the seas, oolite and chalk, 

 after which they disappear from the page of geologic history. 



In the same flaglimestoDe in which the Ceratitis occurs, Icthyolite 

 remains were obtained in the shape of small sharp and finely striated 

 teeth covered with a shining brown enamel, small fragments of bone 

 and one or two scales have also been procured, the identification of 

 which as well as of a rather extensive collection of fossils from the 

 Salt Eange, cannot be effected in our present position with neither 

 collections nor books of reference available. The whole collection 

 will be sent home to England, where the fossils can be satisfactorily 

 examined. 



The following species of shells from the Moosakhail limestone 

 were identified in 1849, by M. de Yerueuil. 

 Producta Cara. D'Orbigny. 

 „ costata. Sowerby. 



Elemingii. Sowerby. 

 Orthis crenistria. Phill. 

 Terebratula Eoyssii. L'Eveille. 



On the above, Sir Eoderick Murchison remarks, in a communica- 

 tion addressed to the Geological Society in December 1850, " these 

 fossils have already been known to have an enormous geographi- 

 cal range, the Producta Cara. occurring in Peru, Spitzbergen, 

 northern Europe and the Sierra Morena of Spain, whilst two or 

 three of the other species, have an almost equally extensive distri- 

 bution." 



The carboniferous formation, the thickness of which, when well 

 developed, is probably not less than 1800 feet, is entirely confined 



