NOKIC AND RHAETIC. 
99 
liorizon. Most of the species are common to this series and to the 
lower Monotis beds. 
The fauna of the quartzite series consists of the foUowing forms ; — 
Spiriferina Griesbachi Bittn. 
Spirigera maniensis Krafft, 
,, (?) maniensiformis Dien. 
Aidncothyris joharensis Bittn. 
Rhynchonella bambanagensis Bittn. 
Pecten, sp. ind. aff. monilifero Muenst. 
Lima cf. serraticosta Bittn. 
,, sp. ind. aff. cumaunicce Bittn. 
The lower series of the Upper Trias, which is comparatively poor in 
pure limestones, is overlaid in all sections conformably and regularly by 
a great thickness of grey limestones and dolomites, which in their 
lithological characters recall most strongly the Alpine Dachstein- 
kalk Part of this enormous limestone mass, which underlies the 
Jurassic Spiti shales, represents indeed the European Dachsteinkalk 
while another part belongs to geologically younger beds (Lias and 
Oolite). 
This Upper Triassic group of well-bedded limestones and dolomites, 
which C. L. Griesbach included almost entirely in his " rheetic 
system," is well defined towards its base by the quartzite series, but its 
upper boundary is quite uncertain. The entire thickness of the lime- 
stone mass is about 2,300 feet, of which at least 800 feet belong to the 
Upper Trias. 
Lithologicallv this mass of limestones and dolomites is too uniform 
and faunistically it is too poor in fossils to be subdivided in any greater 
detail. 
Near Hansi a band of limestone, about 20 feet thick, which occur, 
50 feet above the quartzite series, contains immense numbers of Mega- 
lodon ladakhensis Bittn. and Dicerocardium himalot/anese Stol.^ This is 
the horizon of Stoliczka's " Para limestone,"- blocks of which are very 
common throughout the upper Para valley, according to Hayden. 
1 H. Hayden, Geology of Spiti, I.e., p. 84. 
2 F. Stoliczka, Metn., Geol. Sun: of India, Vol. V, p. 124. 
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