KEUPER STRATA. 
G1 
This is not a perfect list, but may serve to show of what 
materials the Keuper fauna consisted in the Indian area. 
Suess has beautifully shown how the Red Sandstone areas of 
this age were grouped round the shores of small Triassic con¬ 
tinents and islands in the North European area, while the 
deep sea deposits between the members of this Archipelago 
are represented in the south by thick massive limestones and 
shales, which have, in the course of time, become the highest 
mountain tops. 
We now see that this open water extended continuously to 
the Alps of India, and the contents of the sea bottom were 
in the main the same. Yet, around the central masses of 
India, the equivalents of the New Red Sandstone, as we learn 
from Oldham's explorations, were again like those of North¬ 
ern Europe, and they are even more prolific of plants. They 
were either fresh-water deposits, or deposits close in shore, 
while the Alpine limestones were formed in deeper water. 
Most of the following were found at Raj-hoti; where any 
of them are from Gunesgunga only, they are so marked. 
AMMONITES FLORIDUS—TFk?/€«. 
Plate 6, fig. 1 (Plate 8, fig. 1-3, juniores). 
Yon Hauer. Naturwiss. Abhandl., vol. i., 1.1, figs. 5-14. 
If not quite perfect, there is enough to show that this fine 
species is identical with the common fossil from the Carin- 
tliian Alps. 
The name has obvious reference to the richly-foliated sutures 
which show all over the surface in the adult shell. The species 
having been well described, I shall only notice a few of the 
principal features. 
The curious short ridges, with indents between them, are 
quite characteristic. The surface looks as if the shell were 
pinched up at regular intervals along the middle line of the 
whorl. 
