NORIC AND RHARTIC. 
103 
It is true that sections of Megalodon have been noticed occasionally 
even in the topmost beds of the limestone No. 1, but the mere occur- 
rence of a specifically indeterminable Megalodon is, of course, no proof 
of a Triassic age, for in Southern Tyrol this genus ranges up from Trias- 
sic into liassic strata. 
The development of the noric stage below the homogeneous mass of 
Upper Triassic limestones is nearly identical in Spiti and Painkhanda. 
At the base of the Dachsteinkalk, if we are permitted to make use 
of this term, a series of white and brown quartzites, alternating with 
concretionary limestones and shales, can be observed in the sections of 
the Bambanag and Shalshal cliffs. Its thickness amounts to 250 feet. 
Diener, it is true, has already mentioned beds of quartzitic sandstone 
as occurring at the base of the Dachsteinkalk, but A. v. Krafft was the 
first to recognise the stratigraphical importance of this horizon. The 
development of this quartzite series is very similar to that in Spiti. 
Moreover, the characteristic leading fossil, Spirigera maniensis, was 
also found by him in the Bambanag section, besides a few other forms, 
known from lower and higher beds, namely : — 
Aulacothyris joharensis Bittn. 
Spirigera cf. Noetlingi Bittn. 
,, Dieneri Bittn. 
Pecten interruptus Bittn. 
Fig. 10. — Section through the slojjes of the Bambanag cliff. 
11. Megalodon limestone. 
10. Quartzite series. 
9. Limestone with Spiriferina Grieshacln. 
304 ) 
