108 
DIENEE : THIAS OF THE HIMALAYAS . 
Of brachiopods Rhynchonella bambanagensis has been mentioned by 
Bittner. 
This group of nodular limestones, which lithologically recalls the 
Muschelkalk, was first designated " Hauerites beds " by E. v. Moj- 
sisovics, a name which later on was replaced by " Zone of Pro- 
chjdonautilus Griesbachl." The name " Hauerites beds " has become un- 
tenable, since Diener' has proved the fragments assigned to Hauerites by 
E. V. Mojsisovics to belong to a new subgenus, allied very nearly to the 
Alpine Carnites floridus Wulf. 
d. Interregional correlation and homotaxis of the Upper Triassic deposits 
of Spiti and Painkhanda vith those of Europe and America. 
In Spiti the carnic stage opens with the Halobia limestone, but in its 
meagre fauna Halobia of. convita Bittn. is the only fossil directly indicative 
of a carnic age. Whether it ought to be correlated with the cordevolic or 
julic substage of the Alpine Trias, cannot be decided. There is, indeed, 
no evidence of the cordevolic substage being represented faunistically in 
the Himalayas. 
In the " Grey beds," following above the Halobia limestone, the 
lower fossiliferous horizon with Joannites cyrnbiformis Wulf. is certainly a 
homotaxial equivalent of the zone of Trachijceras aonoides of the julic 
substage in the Alps. Among six species of ammonites three are identi- 
cal with European forms from this zone, and the rest, which could not 
be determined specifically, equally point in the same direction. 
The brachiopod-bearing horizon of the grey beds, situated 300 feet 
above the basal fossiliferous layer, has yielded several elements pecu- 
liar to the Indian region, among them the genera Lilangina, Pornaran- 
gina, Aspidothyris. Among the species of Brachiopoda with European 
affinities, there are some remarkable types, which point more nearly to 
a Muschelkalk than to an Upper Triassic age. But all of them — especial- 
ly Mentzelia Mentzelii Dunk. — range as stragglers into the julic sub- 
stage of the Eastern Alps. There is no palaeontological evidence in 
favour of a correlation of this horizon with the upper carnic or tuvalic 
substage. 
1 C. Diener, Himal. Foss., Vol. V, Pt. 3, p. 108. 
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